Frame selection (2)

FRAME SELECTIONFRAME SELECTION

OPTOM FASLU MUHAMMED

The person aiding in selection must The person aiding in selection must have the ability to know what the frame have the ability to know what the frame will look like with lenses,& how it will will look like with lenses,& how it will perform in fulfilling the wearer’s needs.perform in fulfilling the wearer’s needs.

USING THE WEARER’S OLD USING THE WEARER’S OLD FRAMEFRAME

There are a number of valid reasons There are a number of valid reasons for wanting to use the old frame.for wanting to use the old frame.

These include cost, comfort of the These include cost, comfort of the old frames, and sometimes the old frames, and sometimes the inability of the wearer to look in the inability of the wearer to look in the mirror with any other frame. mirror with any other frame.

FACTORS TO CONSIDER BEFORE FACTORS TO CONSIDER BEFORE USING THE WEARER’S OLD FRAMEUSING THE WEARER’S OLD FRAME

Putting new lenses in an old frame may Putting new lenses in an old frame may involve putting additional stress on the involve putting additional stress on the frame.frame.

Older frames may not withstand that stress Older frames may not withstand that stress very well, particularly older plastic frames very well, particularly older plastic frames that have become brittle with age.that have become brittle with age.

It is hard to predict how long an old frame It is hard to predict how long an old frame will lastwill last

If the old frame needs repairing in the If the old frame needs repairing in the future, will there be parts available.future, will there be parts available.

Usually people keep their old glasses Usually people keep their old glasses as a backup spare pair in case they as a backup spare pair in case they lose.lose.

COSMETIC COSMETIC CONSIDERATIONSCONSIDERATIONS Any new frame will represent a Any new frame will represent a

change and will look strange.change and will look strange. What is cosmetically correct for a given What is cosmetically correct for a given

face must be related to whatever face must be related to whatever styles are in vogue.styles are in vogue.

Frame shape & face shapeFrame shape & face shape Hair style can also alter the apparent Hair style can also alter the apparent

shape of the face.shape of the face. A well selected frame can increase the A well selected frame can increase the

attractiveness of a faceattractiveness of a faceFacial typesFacial typesFitter who has an understanding of facial Fitter who has an understanding of facial

shapes will know how a frame will look shapes will know how a frame will look before placing it on the face.before placing it on the face.

1.1. The oval face is The oval face is considered the ideal considered the ideal shape because of its shape because of its mostly balanced mostly balanced proportionsproportions

2.2. Frames should maintain Frames should maintain the natural balance of the the natural balance of the oval faceoval face

Oval Face: Description

Generally, there are seven basic facial Generally, there are seven basic facial shapes:shapes:

1.1. Diamond-shaped faces are Diamond-shaped faces are narrow at the eye line and the narrow at the eye line and the jaw line with a small forehead jaw line with a small forehead and chinand chin

2.2. Cheekbones are frequently Cheekbones are frequently high and dramatic.high and dramatic.

Diamond Face: Description

3.3. The diamond is the rarest The diamond is the rarest face shapeface shape

4.4. Frames should widen the Frames should widen the forehead and jaw and forehead and jaw and minimize the temples and minimize the temples and cheekbonescheekbones

Diamond Face: Description

1.1. The round face is full with The round face is full with few anglesfew angles

2.2. The width and length are in The width and length are in roughly equal proportionsroughly equal proportions

3.3. Frames should make the Frames should make the face appear longer and face appear longer and thinnerthinner

Round Face: Description

1.1. The square face is The square face is characterized by a strong characterized by a strong jaw line, a broad forehead, jaw line, a broad forehead, and a wide chin and and a wide chin and cheekbonescheekbones

2.2. Frames should make the Frames should make the face look longerface look longer

Square Face: Description

1.1. The base-down triangular The base-down triangular face has a narrow forehead face has a narrow forehead that widens at the cheek and that widens at the cheek and chin areaschin areas

2.2. Frames should add width to Frames should add width to the forehead while softening the forehead while softening and narrowing the and narrowing the appearance of the jaw, chin, appearance of the jaw, chin, and cheeksand cheeks

3.3. The ideal face for glassesThe ideal face for glasses

Triangle Face: Description

1.1. The base-up triangular The base-up triangular face is characterized by a face is characterized by a very wide forehead and very wide forehead and high cheekbones which high cheekbones which narrows gradually to the narrows gradually to the chinchin

2.2. Frame should add width Frame should add width below the eye line to offset below the eye line to offset the narrow chinthe narrow chin

3.3. The worst face for glassesThe worst face for glasses

Inverted Triangle Face: Description

1.1. The oblong face is one that The oblong face is one that is longer than it is wideis longer than it is wide

2.2. Select a frame that is Select a frame that is deeper than it is wide to deeper than it is wide to create the illusion that the create the illusion that the face is shorterface is shorter

3.3. Frames should “break up” Frames should “break up” the length of the face to the length of the face to make the face appear make the face appear shorter and widershorter and wider

Oblong Face: Description

Fitt ing by face shapeFitt ing by face shapeBASIC FITTING FITTING SUGGESTIONBASIC FITTING FITTING SUGGESTIONFACIALFACIAL SHAPESSHAPESSHAPESSHAPESOval Normal May wear most any typeOval Normal May wear most any type

Oblong Long face Deep frame Oblong Long face Deep frame Low temple attachmentLow temple attachmentRound Wide face contrasting Narrow frame Round Wide face contrasting Narrow frame Square shapes High temple attachmentSquare shapes High temple attachment

Base down Erect (base Fit size to larger part of lower facial Base down Erect (base Fit size to larger part of lower facial Triangular down) trian - areaTriangular down) trian - area gular face contrasting Dark colors or bolder look are in ordergular face contrasting Dark colors or bolder look are in orderInverted Inverted (base shapes Unobtrusive frame (metal or rimlessInverted Inverted (base shapes Unobtrusive frame (metal or rimlessTriangle up) works well)Triangle up) works well) Triangular face Light or medium weight frameTriangular face Light or medium weight frame Lighter color is in orderLighter color is in orderDiamond Rounded lens shapeDiamond Rounded lens shape Delicate characteristics of frame for women Delicate characteristics of frame for women

Affecting the length of the Affecting the length of the faceface

For purposes of frame For purposes of frame selection, we are concerned selection, we are concerned with the vertical and horizontal with the vertical and horizontal dimensions of the frame, the dimensions of the frame, the roundness or squareness of roundness or squareness of the frame shape, and the the frame shape, and the coloration of the frame front.coloration of the frame front.

As a general rule, the longer As a general rule, the longer the face, the greater the the face, the greater the vertical depth.vertical depth.

The shorter the face, the smaller the The shorter the face, the smaller the vertical depthvertical depth

A deeper frame is more complimentary A deeper frame is more complimentary to a long face. to a long face.

Frame colorFrame colorHair color, skin color, feature size, and eye color Hair color, skin color, feature size, and eye color

can all give valuable clues to the suitability of can all give valuable clues to the suitability of eyewear coloreyewear color

Facial featuresFacial featuresThe smaller and more delicate the features, the The smaller and more delicate the features, the

lighter the frame color can be; the heavier the lighter the frame color can be; the heavier the features, the darker the frame color allowable. features, the darker the frame color allowable.

Frame thicknessFrame thickness A man with large, broad face facial features who A man with large, broad face facial features who

is smaller in stature than would be expected for is smaller in stature than would be expected for the ruggedness of the face. To help neutralize the ruggedness of the face. To help neutralize the effect of a head out of proportion to the body the effect of a head out of proportion to the body , a frame weight lighter than normal might be , a frame weight lighter than normal might be used.used.

Children and women with childlike features are Children and women with childlike features are especially complimented by a thin frame. especially complimented by a thin frame.

Fitt ing by frame weightFitt ing by frame weight

Frame weight indication forFrame weight indication for

Heavy large, broad featuresHeavy large, broad featuresMedium normal features,largeMedium normal features,large features,& small staturefeatures,& small stature Light small, delicate features,Light small, delicate features, women with childlike women with childlike features, children.features, children.

BRIDGE DESIGNBRIDGE DESIGN

To Shorten the To Shorten the NoseNose ::

Choose a frame Choose a frame with a low or solid, with a low or solid, colored bridgecolored bridge

Avoid a keyhole Avoid a keyhole bridge, a high bridge, a high bridge, or a clear bridge, or a clear bridgebridge

To Lengthen the Nose:To Lengthen the Nose:

Choose a keyhole Choose a keyhole bridge, a high bridge, or bridge, a high bridge, or a clear bridgea clear bridge

Avoid a frame with a low Avoid a frame with a low or solid, colored bridgeor solid, colored bridge

To Narrow and Lengthen To Narrow and Lengthen a Wide Nose:a Wide Nose:

Use a clear or metal Use a clear or metal bridge that sits close to bridge that sits close to the nosethe nose

Use nose padsUse nose pads

FITTING CONSIDERATIONSFITTING CONSIDERATIONS

Once the lens size and shape have Once the lens size and shape have been selected, the well-fitted frame been selected, the well-fitted frame rests in the choice of the proper bridge rests in the choice of the proper bridge and the proper temple style and lengthand the proper temple style and length

The bridgeThe bridge The appropriate bridge is determined by The appropriate bridge is determined by

its width, the position of its pads, the its width, the position of its pads, the frontal angle of the bridge at the pads, the frontal angle of the bridge at the pads, the flare or splay angle of the pads, and the flare or splay angle of the pads, and the vertical angle of the pads.vertical angle of the pads.

The bridge selected should not allow the The bridge selected should not allow the eyewires to ride on the cheeks.eyewires to ride on the cheeks.

Signif icant nasal angles for Signif icant nasal angles for f i tt ingfitt ing

If the nose is observed from the front, it will be If the nose is observed from the front, it will be noted that the two sides form a noted that the two sides form a frontal angle frontal angle with with each other.each other.

The angle with which each side deviates from The angle with which each side deviates from the vertical is called frontal angle.the vertical is called frontal angle.

The The splay anglesplay angle is seen as the nose widens from is seen as the nose widens from front to back. It can be best visualized as if front to back. It can be best visualized as if viewed from above. viewed from above.

Frontal angles Frontal angles It refers to the It refers to the

vertical position of vertical position of the pads in relation the pads in relation to each other when to each other when viewed from the viewed from the front front

The top should The top should closer than bottomcloser than bottom

Angling in toward Angling in toward each other each other approximately 20approximately 2000 from a true vertical from a true vertical

Splay angleSplay angle

Nose is wider at base than bridge, Nose is wider at base than bridge, that the face of the pad should rest that the face of the pad should rest fully on the nosefully on the nose

It is apparent that the back edge of It is apparent that the back edge of the pads should be further apart than the pads should be further apart than the front edge of the each pad, viewed the front edge of the each pad, viewed from the top or the bottom is the splay from the top or the bottom is the splay angleangle

Initial alignment, a splay angle of 25 -30Initial alignment, a splay angle of 25 -30 0 0 is satisfactory is satisfactory

Vert ical angleVertical angle This is important in ensuring proper This is important in ensuring proper

weight distribution under the pad weight distribution under the pad

Longitudinal axis of pad face is in Longitudinal axis of pad face is in contact with the nose surface contact with the nose surface

If pads are round no vertical angleIf pads are round no vertical angle

Glasses are positioned on the nose Glasses are positioned on the nose with proper pantoscopic angle with proper pantoscopic angle

A vertical angle of approx 15A vertical angle of approx 15 0 0 is is acceptable acceptable

Adjustable padsAdjustable pads

The full flat surfaces of the pads rest on the The full flat surfaces of the pads rest on the sides of the nose.sides of the nose.

The pads can be adjusted individually for each The pads can be adjusted individually for each side of the nose.side of the nose.

In selecting a frame with adjustable pads, the In selecting a frame with adjustable pads, the principal criteria are:principal criteria are:

1.1. The DBL should be such that the pads can be The DBL should be such that the pads can be easily set to rest on the sides of the nose.easily set to rest on the sides of the nose.

2. When heavy frames or lenses are being 2. When heavy frames or lenses are being selected, the following factors influence pad selected, the following factors influence pad comfort.comfort.

a.a. The inclination of the frontal angle of the nose The inclination of the frontal angle of the nose on which the pad surface will rest. The closer on which the pad surface will rest. The closer to vertical the pad is, the greater will be the to vertical the pad is, the greater will be the pressure on the nose to hold the frame in pressure on the nose to hold the frame in place.place.

b.b. If the surface of the pad is almost vertical, it is If the surface of the pad is almost vertical, it is best to use lightweight lenses. Pads made best to use lightweight lenses. Pads made from silicone material do not trend to slip as from silicone material do not trend to slip as much as regular plastic pads.much as regular plastic pads.

33. . In selecting a frame with an adjustable bridge. In selecting a frame with an adjustable bridge. Care must also be given to the type of pad arm Care must also be given to the type of pad arm and its attachment to the eyewear. Very short and its attachment to the eyewear. Very short vertically attached pad arms. Such arms allow vertically attached pad arms. Such arms allow only very limited adjustment of the pads.only very limited adjustment of the pads.

4. The center of gravity of a heavy frame is closer 4. The center of gravity of a heavy frame is closer to the front. If the pads are set closer to the to the front. If the pads are set closer to the frame front, the frame moves closer to the frame front, the frame moves closer to the face. This places the center of gravity farther face. This places the center of gravity farther back, resulting in the frame staying in place back, resulting in the frame staying in place more easily.more easily.

Children’s bridgesChildren’s bridges It has been found that in children between It has been found that in children between

the ages of 3 and 18 yrs there is only a the ages of 3 and 18 yrs there is only a slight change in the crest angle of the slight change in the crest angle of the nose the slope from the crest to the tip of nose the slope from the crest to the tip of the nose. the nose.

A larger pad or contact surface area helps A larger pad or contact surface area helps the frame sit better.the frame sit better.

Fitt ing temple stylesFitt ing temple stylesTemple style indicated for contraindicated forTemple style indicated for contraindicated forComfort cable active people Off and on wearComfort cable active people Off and on wearor riding bow jobs requiring unusualor riding bow jobs requiring unusual head positionshead positions young childrenyoung children Especially heavy fra -Especially heavy fra - mes and/or lensesmes and/or lensesStraight back Off and on wear Heavy lenses Straight back Off and on wear Heavy lenses Persons with parallel - Persons with parallel - sided nosessided noses Frames with week fronts Frames with week fronts

Skull Normal,everyday Jobs requiring unusual head Skull Normal,everyday Jobs requiring unusual head

wear positionswear positions

SELECTING FRAMES FOR THE SELECTING FRAMES FOR THE PROGRESSIVE ADDITION LENS WEARERPROGRESSIVE ADDITION LENS WEARER

A progressive addition lens wearer A progressive addition lens wearer needs a frame with:needs a frame with:

1.1. A minimal vertex distance.A minimal vertex distance.2.2. An adequate pantoscopic tilt.An adequate pantoscopic tilt.3.3. Sufficient vertical depth in the nasal Sufficient vertical depth in the nasal

portion of the frame shape.portion of the frame shape.

FITTING THE HIGH MINUS FITTING THE HIGH MINUS WEARERWEARER

USE AVOIDUSE AVOIDSmaller eye size Large lensesSmaller eye size Large lenses

If in B/w sizes, use the Excessive decentration If in B/w sizes, use the Excessive decentration smaller indicated eye size smaller indicated eye size & larger indicated bridge size& larger indicated bridge size

Rounded corners Squared off cornersRounded corners Squared off corners

Low density (light wt) Crown glass lensesLow density (light wt) Crown glass lenses lenses if wt reduction islenses if wt reduction is importantimportant

Midindex or high index Low index lenses,suchMidindex or high index Low index lenses,suchlenses,such as polycarbonate as CR 39 plastic lenseslenses,such as polycarbonate as CR 39 plastic lenses or high index plasticor high index plastic

Antireflection coating or Frames that extend beyond Antireflection coating or Frames that extend beyond a light tint the side of the wearer’sa light tint the side of the wearer’s headhead

Aspheric or atoric lenses Flat, non-AR coated front Aspheric or atoric lenses Flat, non-AR coated front

curvescurves

FITTING THE HIGH PLUS FITTING THE HIGH PLUS WEARERWEARER

USE USE AVOIDAVOID

Smaller eye size Large lensesSmaller eye size Large lenses

Rounded lens shapes unusual shapes & Rounded lens shapes unusual shapes & long long

cornerscornersShort vertex distance Large vertex Short vertex distance Large vertex

distancesdistances

Adjustable (nose pad) Fixed bridges Adjustable (nose pad) Fixed bridges

bridges bridges

Cable or securely fitting Library & straight back Cable or securely fitting Library & straight back temples templestemples temples

High index plastics Glass & CR 39 lensesHigh index plastics Glass & CR 39 lenses

Reference Reference

System for ophthalmic dispensing (3System for ophthalmic dispensing (3 rdrd edition )edition )

Any doubts ??

Proficiency testProficiency test

Which of the following is indicated Which of the following is indicated and should be used when fitting the and should be used when fitting the high minus lens wearer?high minus lens wearer?

1.1. Rounded cornersRounded corners2.2. Large lensesLarge lenses3.3. Crown glass lensesCrown glass lenses4.4. Excessive decentrationExcessive decentration

The lower the frame bridge, the greater The lower the frame bridge, the greater the effect of:the effect of:

1.1. Shortening of the noseShortening of the nose2.2. Lengthening of the noseLengthening of the nose3.3. No changeNo change4.4. Longer the faceLonger the face

Which of the following is not an important Which of the following is not an important criterion in choosing a frame for a criterion in choosing a frame for a progressive additional lens wearer?progressive additional lens wearer?

1.1. A minimal vertex distanceA minimal vertex distance2.2. Adequate pantoscopic tiltAdequate pantoscopic tilt3.3. Sufficient vertical depth in the nasal Sufficient vertical depth in the nasal

portion of the frame shape.portion of the frame shape.4.4. All of the above are important criterion All of the above are important criterion

when choosing a frame for a progressive when choosing a frame for a progressive addition lens wearer.addition lens wearer.

Which of the following should be avoided Which of the following should be avoided when fitting a high minus wearer?when fitting a high minus wearer?

1.1. A high index lens materialA high index lens material2.2. Squared off cornersSquared off corners3.3. Aspheric lensesAspheric lenses4.4. Smaller eye sizeSmaller eye size

Which of the following is not a good Which of the following is not a good frame characteristic for a person having frame characteristic for a person having a high plus lens prescription?a high plus lens prescription?

1.1. Small lens sizeSmall lens size2.2. Adjustable bridgeAdjustable bridge3.3. Library templesLibrary temples4.4. High index lensesHigh index lenses

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