Frame SelectionDr. Ali MirzajaniTehran University of Medical Science
Frame Selection From an aesthetic point of view , glasses are of no small importance to the person wearing them. The patient needs to received help, not only with sizing ,but also with the cosmetic aspects of a frame.
Frame Selection Despite continuous changes in frame styles, there are still certain basics that can be used to arrive at an aesthetically pleasing and comfortable frame. The wearer ultimately has the final choice of what he will wear , but he /she should not be allowed free rein in selecting his frames.
Cosmetic consideration Well-selected frame shape tends to : Exaggerate and emphasize facial lines are complementary (more desirable aspects) to the person and make face more attractive. Disparage and deemphasize facial lines are uncomplementary (less desirable aspects) to the person.
Cosmetic consideration Complementary lines should be emphasized through repetition , usually by the upper and/or lower eye wires. (make face more attractive) Reciprocally , uncomplementary lines should not repeated by the frame lines. (make face unattractive)
Cosmetic consideration Few faces meet the artistic ideal in bone structure and conformity. The line of the frame selected should create the effect of balancing facial planes that are not components of idealized proportions. The idea is the same as using vertical stripes to enhance the appearance of a short or a fat person.
Cosmetic consideration facial types Generally ,there are seven basic facial shapes
facial types Oval : considered to be the ideal type.
facial types Oblong: thinner and longer than the oval.
facial types Round: more circular than the oval.
facial types Square: again, the sides of the face are more parallel than in the oval, with the face being wider and shorter than usual.
facial typesTriangular: the lower part of the face is wider .than the upper part
facial types:(Inverted triangular(base up the upper part of the face ,the temple area is wider .than lower jaw area
facial types Diamond: the central section of the face iswider, with the upperand lower extremitiesof the face narrowing .down considerably
Cosmetic consideration To simplify the face shapes for the purpose of aiding in the choice of frame width and depth , the seven shapes can be condensed down to the following five shapes.
A Basic Guide to Face Shapes Three Keys:Frame shape should contrast with face shapeFrame size should be in scale with face size Eyewear should balance personal proportion
Theoval faces can wear any kindof shapes, big, small, strict, as.it suit you
OVAL - oval-shaped faces tend to suit many different stylesYour goal should be to keep the ovals natural balance. Look for frames that a ,as wide as, or wider than, the broadest part of the face (1almond or walnut-shaped frames that are neither too deep nor too narrow so (that they do not upset facial balance
If you have around face you can go for a round shape or correct the line of the face with a square shape Your goal should be to make the face appear longer and thinner. Look for,angular, narrow frames that will lengthen the face (1 ,high or mid-height temples, which help create a longer profile (2 ,a clear bridge that widens the eyes (3frames that are wider than they are deep, such as an octagonal shape (4
ROUND- a round face tends to suit quite angular stylesand geometric shapes,which give definition to the face. Round or large eye shapesare lesssuitable as they will exaggerate the round shape of the face
Choose frames that are distinctive, angular,almost square, with designs that accentuate theupper part of the face. Look for frames with hightemples andup-swept "cats eye" styles.
If you have asquare face, youcan go in the same shape as theface, or on the contrary to go to oval shape .Your goal should be to make the face look longer and soften the angles : Look for ,curvilinear, narrow styles that soften facial angles (1 ,frames that are wider than the widest part of the face (2 frames that have more width than depth, and (3 .narrow ovals, which are an excellent choice (4
SQUARE - soft, oval shapes workwell. Thin, angular styles are less flattering
If you have along face, you shouldgo for a frame which cut the length ofthe face and enlarged the face, inrespect to the interpupillary .distanceThe long shape can benefit from enhancing the width of the face sotry wide, large framed glasses in oval or round styles
long facelook for softer shapes with some width; anything smalland angular will tend to be less flatteringChoose frames that are deep to shorten the face. Framescan be slightly wider than the face
Face Shape: OblongColoring: Cool, medium intensity
Heart or Triangular shapedFrame shapes to try Choose angular frames withstrong vertical lines. Avoid frame shapes whichmirror the angle of the jaw and in doing so draw.attention to it
Triangular shaped Triangular shaped– Try to select narrow,round or square eye shapes for these faces,which are a wider and more rounded shapethan triangular ones
BASE-UP TRIANGLE FACESBase-Up shaped faces have a very wide top third and smallbottom third. Your goal should be to minimize the width ofthe top half of the face. Look for1) frames that are wider at the bottom half of the frame,2) very light colored materials are effective, and uniform in colour3) rimless styles are an excellent choice.
Frame color Effective factors in frame color selection:2. Hair color3. Skin color4. Feature size5. Eye color
Hair color Gray hair : frames in pale tints of blue or rose are suitable. Pure white or partially gray hair : plain gray frames are better. Red hair: green frames is better( browns or reds should be avoided).
(Skin color (facial tone Yellow or olive skin tones: colors to be avoided would be green-brown , green , yellow, or yellow-brown, because emphasize the yellow or olive tones already sufficiently present. The recommended colors are those that draw out the colors desired, i.e. ,reds, pinks, red-browns.
(Skin color (facial tone Overly pink skin: good colors: cool brown, greens, and ambers. Avoided colors : shades of blue, violet, and magenta
(Skin color (facial tone Ageing skin : The same colors as yellow or olive skin tones are suitable. Warm brown-red tones. Avoided colors : gray, black, metallic frames, which only emphasize shadows caused by wrinkles.
(Skin color (facial tone Skin irregularities: A black color frame will emphasize skin irregularities.
(Skin color (facial tone The smaller and more delicate the features, the lighter (thinner ) the frame should be. The larger and broader the features, the heavier (thicker) the frame should be. For children and women with child-like features, a light weight frame is suitable. Using a frame too thick create a puny appearance.
Temple design Basically temple style is indicated more by its relation to appropriate function than by appearance. Broad temples tend to decrease the facial length. Thin temples tend to increase the facial length.
High-power Myopes Small, round frame shapes are best to reduce lens thickness Angular frames with sharp corners will accent the thickness of the lenses Frames that look good with plano lenses may be very unattractive with high minus lenses
Fitting high plus lenses .Small, round frames .Fitting with high index aspheric lenses. Fit with a short vertex distance
FittingconsiderationGeneral rules Sturdy construction for high power lenses Frames with excessive curved front is not suitable for fitting. Frames with excessive flat front is not suitable for fitting. Frames with excessive eye size is not suitable for small PD When the previous glasses are used frame selection is function of the old frame.
For high minus lenses1. Small eye size2. Frame with rounded corners3. A wide frame should be avoided.4. Excessive decentration should be avoided (outer edge Vs inner edge)5. Wider bridge (more DBL) Thus : less effective diameter a 50 □ 20 instead of a 52 □ 18
For high minus lenses6.High index of refraction for reducing the edge thickness.7.Plastic lenses for reducing the weight in the sensitive nose.8. Using a flat bevel rather than the usual 40 º reduces reflection rings (also edge coating)9. Thick rim of demi-amber or brown plastic is suitable. (a crystal or black frame is not suitable)
For high minus lenses10.Front curves less than 2.00 D will result in a high reflection of light from the front.11.Using a pink tint or antireflection coating will reduce lens reflections.12.Minus lens and eye make up
For high plus lenses1. Smaller eye size2. Rounded shapes3. Effective diameters ≤ eye size + 2mm4. Shapes with small “frame differences”
For high plus lenses5. Sturdy construction6. Short vertex distances7. Adjustable nosepads (for regulate BVD)8. Cable temples
For cylindrical lenses Rounded shapes is not suitable (rotating cylinder axis) Frame dimension should be short in along thickness direction of the lens when it is possible.
Fitting consideration the bridge The appropriate bridge is determined by: Bridge width Position of its pads Frontal angle of the bridge at the pads Splay angle (transverse angle) Vertical angle (crest angle)
Healthy consideration As a healthy point of view , properties that frame materials required can be listed as:
Healthy consideration1. They must not injure –cause dermatitis2. They must take and hold a good polish3. They must be resist attack from skin acids (cellulose nitrate becomes yellow and crazed with time)4. They must be light (neurotic problems)
Healthy consideration agents cause dermatitis have a poor quality1.Metal frames that nickel alloy base metal (common)2. Coloring agents3. Even gold can cause dermatitis
Healthyconsideration There is two type of contact dermatitis:2. Irritant contact dermatitis (ICD)3. Allergic contact dermatitis (ACD)
Healthy consideration children bridges The investigations have shown that splay angle decreases from 28.2 º at ages “3 to 5” to 23 º at ages “ 16 to 18” . The depth of the nasal bridge also changes : it increases from 14.2 mm at age 3 to 5 to 19.2 mm at age s 16 to 18.
Healthy considerationchildren bridges Thus in children: A larger pad splay angle A larger pad area More soft pad that does not inhibit nasal development. Using different types of nasal pads.
Healthyconsideration Selection of the wrong nasal pad can causes deformity and malformation of childs nose. An uncomfort bridge can cause neurotic problems for wearer. A non-suitable bridge can cause injury of the skin. A bridge pad with no good material (no skin acid resistance ) can cause contact dermatitis.
Healthyconsideration In wearers with surgical process on nose or other facial parts, a light weight frame with a good adjustable pad should be used. With age there are pronounced physiological changes to the elasticity and fat content of the skin and therefore , the bridge fitting is important.
Visual consideration Half-eye frame for near vision Suitable eye size for size of patients eyes Suitable field of view No excessive change in eye size
Visual consideration Gradually variation in frame mode (important as both visually and habitually – suppression of the old frame components) suitable frame for bifocals and progressive corrections No too small eye size for children ,specially in accommodative esotropia.
Frame selection inEar, nose and otherfacial deformities