5/9/2019 1 Managing Irregular Astigmatism – Cataract Surgery SHERAZ DAYA MD FACP FACS FRCS(Ed) FRCOphth Financial Disclosure Company Code 1. Abbott Medical Optics Inc. S 2. Bausch + Lomb C,L 3. Carl Zeiss Meditec C 4. Clarvista C 5. Ellex L 6. Excellens C, O 7. LinCor Biosciences C 8. Lumenis C 9. Medicem C 10. Nidek, Inc. C,L 11. Omidria C 12. Physiol L 13. PRN O 14. STAAR Surgical C 15. Strathspey Crown C 16. Scope Pharmaceuticals C 17. Rayner C C = Consultant / Advisor E = Employee L = Lecture Fees O = Equity Owner P = Patents / Royalty S = Grant Support
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Managing Irregular Astigmatism - EOS Egypt · Managing Irregular Astigmatism –Cataract Surgery SHERAZ DAYA MD FACP FACS FRCS(Ed) FRCOphth Financial Disclosure Company Code 1. Abbott
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5/9/2019
1
Managing Irregular Astigmatism– Cataract Surgery
SHERAZ DAYAMD FACP FACS FRCS(Ed) FRCOphth
Financial DisclosureCompany Code
1. Abbott Medical Optics Inc. S
2. Bausch + Lomb C,L
3. Carl Zeiss Meditec C
4. Clarvista C
5. Ellex L
6. Excellens C, O
7. LinCor Biosciences C
8. Lumenis C
9. Medicem C
10. Nidek, Inc. C,L
11. Omidria C
12. Physiol L
13. PRN O
14. STAAR Surgical C
15. Strathspey Crown C
16. Scope Pharmaceuticals C
17. Rayner C
C = Consultant / Advisor
E = Employee
L = Lecture Fees
O = Equity Owner
P = Patents / Royalty
S = Grant Support
5/9/2019
2
Irregular Astigmatism – consequences…
• Poor vision
• Biometry
– Challenging
– Errors
– IOL miscalculation
• Patient (& Surgeon) disappointment
Managing Irregular Astigmatism
• Causes of Irregular Astigmatism
• Identification - Diagnostics
• Principles of Management
• Case examples
5/9/2019
3
Irregular Astigmatism - CAUSES
Irre
gula
rity
Tear Film
Epithelium
Sub-epithelial
Stromal
Tear Film
• Dry eye
– Underproductive
– Evaporative
– Inflammation
• Irregular tear film
5/9/2019
4
Impact of Tear Film on Biometry
Epitropoulos AT, Matossian C, Berdy GJ, Malhotra RP, Potvin R. Effect of tear osmolarity on repeatability of keratometry for