2/7/2018 1 Scleral Lenses: Specialty Lens Education for the Novice and Expert James Deom OD , MPH, FAAO, FSLS Scleral Lens Institute Hazleton Eye Specialists and Stroudsburg Eye Specialists • Disclosures • Valley Contax • Allergan • Biotissue • MiboMedical • Physician Recommended Neutraceuticals Hello The rise, fall and rise again of the scleral lens and lab • Early 1800s- first lens described in the medical literature • Adolf fick The rise, fall and rise again of the scleral lens and lab • Early 1900s PMMA invented! The rise, fall and rise again of the scleral lens and lab • Mid 1900s – PMMA Corneal GP , improved ease of fitting • Mid 1900s – RGP Material • 1960/70 First soft lens • 1990s first SiHi
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Scleral Contact Lenses For the Novice and the Expert
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Transcript
272018
1
Scleral Lenses Specialty Lens Education for the Novice and Expert
James Deom OD MPH FAAO FSLS Scleral Lens Institute
Hazleton Eye Specialists and Stroudsburg Eye Specialists
bull Irregular Cornea bull Keratocone bull Post RK bull High ammetropia bull Emmetrope with first time presbyopic need bull Soccer mom complaining of CLD bull Soft contact lens wearer that has fluctuation of
lt1 of the population no gender 13 appear hereditary eye rubbing atopy allergy
bull Post Lasik-Ectasia
Difficult to please and want a non optical solution but like new technology
Scleral Indications A home run every time
bull Irregular corneas
- Post PKP Will do anything for better vision
- Post RK
bull High Cylinder
- Have been told cant have Cls or arenrsquot happy with
SCLs
Scleral Lens Indications A home run every time
bull RGP wearer dropping out due to discomfort
- hate SCLs will try any RGP modality
bull Corneal Scars central or near central
- can drastically improve vision like no other option
272018
4
Scleral Lens Indications More advanced applications
bull Lid Issues
- protection Correction
- Entropion ectropion Ptosis Recurrent Trichiasis
Scleral Lens Indications More advanced applications
bull Dry Eye Disease Sjogrens GVHD
- more particular treat the disease concurrently
bull Normal Eyes
- Comfort Stablity no lid interaction 02 Fluid
Improved VA Completely customizable 2
Scleral Lens Indications
bull Severensky (2010)- retrospective study of referral center ndash90 irregular cornea 7 ocular surface disease 3 were high Rx and astigmats unhappy with SCLs
What is a scleral lens
Rigid Gas permeable material
bull Glass or plasticpolycarbonate
bull Rigid Gas permeable material vs silicon material
Rigid Gas Permeable Material
272018
5
Lands on the hellip
bull SCLERA hellip Wrong
bull Conjuntiva
Vaults the hellip
CORNEA
Vaults the hellip
LIMBUS
Making it Perfect for hellip
New patient no job no insurance Pellucid Marginal Degeneration Wearing
acuvue oasys for astigmatism ndash bcva 2060 ou Educated about condition asked to show vision
with Scleral patient agreed
OD - 2020 OS - 2020
Patient broke down in tears and is on a
monthly payment plan to pay for his lenses he has since referred 2 patients for comprehensive
eye exams
Case 1 ndash The Homerun
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
2
The rise fall and rise again of the scleral lens and lab
bull 1970s first reports of scleral lenses produced of RGP materials
bull Decades later computer assisted lathes and laser etching processes = modern day scleral lenses
bull Irregular Cornea bull Keratocone bull Post RK bull High ammetropia bull Emmetrope with first time presbyopic need bull Soccer mom complaining of CLD bull Soft contact lens wearer that has fluctuation of
lt1 of the population no gender 13 appear hereditary eye rubbing atopy allergy
bull Post Lasik-Ectasia
Difficult to please and want a non optical solution but like new technology
Scleral Indications A home run every time
bull Irregular corneas
- Post PKP Will do anything for better vision
- Post RK
bull High Cylinder
- Have been told cant have Cls or arenrsquot happy with
SCLs
Scleral Lens Indications A home run every time
bull RGP wearer dropping out due to discomfort
- hate SCLs will try any RGP modality
bull Corneal Scars central or near central
- can drastically improve vision like no other option
272018
4
Scleral Lens Indications More advanced applications
bull Lid Issues
- protection Correction
- Entropion ectropion Ptosis Recurrent Trichiasis
Scleral Lens Indications More advanced applications
bull Dry Eye Disease Sjogrens GVHD
- more particular treat the disease concurrently
bull Normal Eyes
- Comfort Stablity no lid interaction 02 Fluid
Improved VA Completely customizable 2
Scleral Lens Indications
bull Severensky (2010)- retrospective study of referral center ndash90 irregular cornea 7 ocular surface disease 3 were high Rx and astigmats unhappy with SCLs
What is a scleral lens
Rigid Gas permeable material
bull Glass or plasticpolycarbonate
bull Rigid Gas permeable material vs silicon material
Rigid Gas Permeable Material
272018
5
Lands on the hellip
bull SCLERA hellip Wrong
bull Conjuntiva
Vaults the hellip
CORNEA
Vaults the hellip
LIMBUS
Making it Perfect for hellip
New patient no job no insurance Pellucid Marginal Degeneration Wearing
acuvue oasys for astigmatism ndash bcva 2060 ou Educated about condition asked to show vision
with Scleral patient agreed
OD - 2020 OS - 2020
Patient broke down in tears and is on a
monthly payment plan to pay for his lenses he has since referred 2 patients for comprehensive
eye exams
Case 1 ndash The Homerun
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
3
Scleral lens indications
bullNONE
Scleral lens indications What do you think
bull Irregular Cornea bull Keratocone bull Post RK bull High ammetropia bull Emmetrope with first time presbyopic need bull Soccer mom complaining of CLD bull Soft contact lens wearer that has fluctuation of
lt1 of the population no gender 13 appear hereditary eye rubbing atopy allergy
bull Post Lasik-Ectasia
Difficult to please and want a non optical solution but like new technology
Scleral Indications A home run every time
bull Irregular corneas
- Post PKP Will do anything for better vision
- Post RK
bull High Cylinder
- Have been told cant have Cls or arenrsquot happy with
SCLs
Scleral Lens Indications A home run every time
bull RGP wearer dropping out due to discomfort
- hate SCLs will try any RGP modality
bull Corneal Scars central or near central
- can drastically improve vision like no other option
272018
4
Scleral Lens Indications More advanced applications
bull Lid Issues
- protection Correction
- Entropion ectropion Ptosis Recurrent Trichiasis
Scleral Lens Indications More advanced applications
bull Dry Eye Disease Sjogrens GVHD
- more particular treat the disease concurrently
bull Normal Eyes
- Comfort Stablity no lid interaction 02 Fluid
Improved VA Completely customizable 2
Scleral Lens Indications
bull Severensky (2010)- retrospective study of referral center ndash90 irregular cornea 7 ocular surface disease 3 were high Rx and astigmats unhappy with SCLs
What is a scleral lens
Rigid Gas permeable material
bull Glass or plasticpolycarbonate
bull Rigid Gas permeable material vs silicon material
Rigid Gas Permeable Material
272018
5
Lands on the hellip
bull SCLERA hellip Wrong
bull Conjuntiva
Vaults the hellip
CORNEA
Vaults the hellip
LIMBUS
Making it Perfect for hellip
New patient no job no insurance Pellucid Marginal Degeneration Wearing
acuvue oasys for astigmatism ndash bcva 2060 ou Educated about condition asked to show vision
with Scleral patient agreed
OD - 2020 OS - 2020
Patient broke down in tears and is on a
monthly payment plan to pay for his lenses he has since referred 2 patients for comprehensive
eye exams
Case 1 ndash The Homerun
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
4
Scleral Lens Indications More advanced applications
bull Lid Issues
- protection Correction
- Entropion ectropion Ptosis Recurrent Trichiasis
Scleral Lens Indications More advanced applications
bull Dry Eye Disease Sjogrens GVHD
- more particular treat the disease concurrently
bull Normal Eyes
- Comfort Stablity no lid interaction 02 Fluid
Improved VA Completely customizable 2
Scleral Lens Indications
bull Severensky (2010)- retrospective study of referral center ndash90 irregular cornea 7 ocular surface disease 3 were high Rx and astigmats unhappy with SCLs
What is a scleral lens
Rigid Gas permeable material
bull Glass or plasticpolycarbonate
bull Rigid Gas permeable material vs silicon material
Rigid Gas Permeable Material
272018
5
Lands on the hellip
bull SCLERA hellip Wrong
bull Conjuntiva
Vaults the hellip
CORNEA
Vaults the hellip
LIMBUS
Making it Perfect for hellip
New patient no job no insurance Pellucid Marginal Degeneration Wearing
acuvue oasys for astigmatism ndash bcva 2060 ou Educated about condition asked to show vision
with Scleral patient agreed
OD - 2020 OS - 2020
Patient broke down in tears and is on a
monthly payment plan to pay for his lenses he has since referred 2 patients for comprehensive
eye exams
Case 1 ndash The Homerun
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
5
Lands on the hellip
bull SCLERA hellip Wrong
bull Conjuntiva
Vaults the hellip
CORNEA
Vaults the hellip
LIMBUS
Making it Perfect for hellip
New patient no job no insurance Pellucid Marginal Degeneration Wearing
acuvue oasys for astigmatism ndash bcva 2060 ou Educated about condition asked to show vision
with Scleral patient agreed
OD - 2020 OS - 2020
Patient broke down in tears and is on a
monthly payment plan to pay for his lenses he has since referred 2 patients for comprehensive
eye exams
Case 1 ndash The Homerun
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
6
Scleral Lens Prescribing
Rethink your Specialty Lens Approach
How do you ldquoPrescriberdquo a
specialty lens
1 Come Back at another visit
2 Full Fit on the spot
3 Test fit and return
bull Fast Paced environmentmdashwhen a patient walks
out the door they may never come back and may
view the return as a money making ploy
bull GET A LENS ON THE EYE BEFORE THEY
LEAVE
Rethink your Specialty Lens Approach
The Deom Approach ndash Normalization of the modality and embracing the technology on a regular basis 1 Potential Scleral Patient Presents 2 Explain to patient that I am a specialist in a new lens
design that offers unparalleled comfort and vision and that I would like the opportunity to place the lens on their eye without any obligation
3 Quick evaluation and over-refraction 4 Discuss the fitting process cost and set expectations
Rethink your Specialty Lens Approach
DEOM GUARANTEE
If you can quickly insert and remove the lens without any complications
the comfort and clarity of the lens will do the rest and you will then be
able to discuss the process with the patient
Rethink your Specialty Lens Approach
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
7
The ultra super secret to successful Scleral lens practice
Insertion and Removal
bull If you can do this by the end of the day even moderately well you can start your practice with this on Monday
Lens prep
bull Most lenses are stored dry bull Boston conditioner Menicon unique pHndash scrub 1
minute MPS rinse bull If beading occurs remove lens ndash rinse with MPS
again bull If beading occurs again ndash squeegee method
Lens Prep
bull Place the lens on your Insertion tool of choice
Lens Prep- The scleral cocktail
bull Non preserved 09 NaCl from inhalation fluid ampules
bull Non preserved Unisol- now dc (Menicon approved solution)
bull Non preserved Refresh PF Oasys tears bull NaFl in the bowl for initial evaluation
Patient Prep
bull Positive terms bull Awareness refreshing cooling blink and
look normally avoid anesthetic if possible bull Paper towels or surgical mats on patientrsquos lap
and in their shirt
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
8
Head lock of scleral love
Head lock of Scleral love Head lock of scleral love
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
9
Insertion tricks
bull Proparacaine
bull Wiggle your toes
bull Fixation point
bull BE QUICK CONFIDENT AND POSITIVE --- Patients smell fear
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
10
Removal
bull Finger method
Insertion and removal teach
bull Same as SCL technician led in and out two times
bull Have them watch insertion and removal videos in week leading up to dispense
httpswwwyoutubecomwatchv=P0xO9bZsTnU
httpswwwyoutubecomwatchv=9fTAW_HAN2Y
httpswwwyoutubecomwatchv=WvgPNn585-Y
Scleral Lens Institute at Hazleton Eye Specialists Custom Stable Protocol
Visit 1
Initial evaluation and fit with fitting
set
Exam fit topo spec mic pachy ant seg phots---
WOW factor
Visit 2 and 3 -same day
Dispense ordered size and Rx ndash VArsquos
SLE Ant Seg Photos
Return after 2 or more hours of wear observe
clarity of solution conj impingement
Nafl disappearance test
Lenses are dispensed or re-
ordered
2 week follow up ndash topo spec mic
pachy sle iop pupils conf field over ref
ant seg photos
-One month
-Three Month
-Three four or six month
Whose got the Bill-ing
bull Not a billing and coding lecture
bull Billing and Coding is very important in a successful
practice
bull Embrace the medical model and view Ocular Surface
Disease and other corneal conditions ie KCN ---- Like
Glaucoma
Condition
Dry Eye
Keratoconus
Treatment
Custom Stable Lens
Medically Necessary Follow ups
Billed Medically
Example 1-KCN
bull 99214 ndash E and M level 4 bull 92015 ndash Refraction bull 92285 ndash External
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
1 Blue light evaluation ndash gross observation for areas of touch- special attention to limbal area
A 5 step program 2 Evaluate the vault central to peripheral Nasal and temporal Pearls It wont be the same throughout goal is 200-400microns feather superior touch is ok Lenses will settle 60-150 microns on average Know the thickness of the lens and the cornea you are working
A 5 step program- Vualt
bull How do you know how much vault is there bull Empirical vs OCT imagery bull Yeung and Sorbara (2014) presented a poster at
the 2014 Global Specialty Lens Symposium (GSLS) bull Three groups of 45 subjects were asked to give
CCC estimates bull categorized as either novice intermediate or
advanced bull biomicroscopy because it was comparable with
results from image processing Performance was similar among all three groups Overall the trend was to underestimate CCC by about 50 microns
A 5 step program- Vualt
bull Vault empirical estimation ndash Is it always accurate
bull Chan Fuller Smith (2014) GSLS Poster
A 5 step program- Vualt
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)
272018
13
A 5 Step Program bull The ldquoPerfectrdquo Vault
bull Real life models GSLS 2014 poster
A 5 Step Program bull The ldquoPerfectrdquo Vault
272018
12
A 5 step program
bull Compared to an OCT Brujic ndash GSLS poster 2016
A 5 step program
The ldquoPerfectrdquo Vault
bull Michaud 2012 ndash Theoretical Model (mathematical)
bull ldquoOur computations show that most modern scleral lenses with recommended fitting techniques should lead to some level of hypoxia-induced corneal swelling Recommendations are made to minimize hypoxia-induced corneal swelling highest Dk available (gt150) lens with a maximal central thickness of 250 μm and fitted with a clearance that does not exceed 200 μmrdquo
A 5 step program
bull Invest Ophthalmol Vis Sci 2014 Sep -----A Theoretical model 3 Oxygen diffusion and edema with modern scleral rigid gas permeable contact lenses Compantilde V1 Oliveira C2 Aguilella-Arzo M3 Mollaacute S1 Peixoto-de-Matos SC2 Gonzaacutelez-Meacuteijome JM2 Conclusioacuten bull Scleral RGP CLs must be comprised of at least 125 barrer of oxygen permeability and up to
200 μm thick to avoid hypoxic effects even under open eye conditions Postlens tear film layer should be below 150 μm to avoid clinically significant edema
A 5 step program
bull The ldquoPerfectrdquo Vault ----Theoretical model 2
bull Only the best case scenario for current scleral gas permeable lenses (thickness and Dk)tear layer values allow sufficient tear layer oxygen tension (approximately 100 mmHg) to preclude corneal hypoxia
bull CONCLUSIONS
bull The results of the spreadsheet model suggest that clinicians would be prudent to prescribe scleral GP lenses manufactured in the highest Dk materials available and to fit without excessive corneal clearance to minimize anterior segment hypoxia
A 5 Step Program
bull The ldquoPerfectrdquo Vault
bull (Sonsino and Mathe 2013 Caroline 2013) Theoretical model 4
bull another possibility is that the reservoir acts as an oxygen depot that is continuously renewed by atmospheric oxygen that permeates the lens
A 5 Step Program
bull The ldquoPerfectrdquo Vault bull Two Camps --- Theoretical and Real studies bull 2 to 3 of edema at the end of the wearing
period if the lens is thick (more than 300 microns) and the clearance remains high over the wearing period (more than 250 microns) (van der Worp et al 2014)
bull It is also suggested that this level of edema is not clinically significant being very similar to the level of physiological edema present upon awakening (Caroline et al 2015)