Term
| Commonly has a metal chassis and a plastic top rims |
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Definition
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Term
| Has two holes per lens and a metal reinforcing arm that follows the upper posterior surface of the lens |
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Definition
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Term
| Holds the lenses in place only at their nasal edge |
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Definition
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Term
| Made especially for those needing a reading correction but no distance correction |
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Definition
Half-eyes
Made especially for those needing a reading correction but no distance correction |
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Term
| Secures the lenses in place with clips attached to a bar of tensile steel that fits into a slot on each side of the lenses |
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Definition
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Term
| Secures the lenses in place by means of a small string that goes around the lenses |
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Definition
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Definition
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| Which type of temple curves around the ear following the crotch of the ear where ear and head meet, extending to the level of the earlobe? This type of temple is usually plastic, and is often used in children's and safety frames |
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Definition
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Term
| This follows the bridge of the nose smoothly, spreading the weight of the frame and using nose pads attached to the back of the bridge |
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Definition
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Term
| A frame material that is generally made into sheets and milled to make frames |
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Definition
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Term
| A material of high flexibility that will maintain that flexibility when soaked overnight periodically |
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Definition
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Term
| Frames from this material can be made thing and lightweight. Frame colors are primarily opaque and some problems may be encountered with breakage in cold weather |
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Definition
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Term
| Used primarily for sport or safety purposes. Does not adjust well. Does not work well for conventional eyeglasses |
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Definition
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Term
| Frames made from these materials are made beginning with granules that are heated until liquid, then injection molded to the desired frame shape |
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Definition
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Term
| A nylon-based material that can be made translucent, not just opaque |
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Definition
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Term
| This material is made from a liquid resin and a hardener that are mixed together and drawn into the frame molds using a vacuum process |
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Definition
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Term
| Is often used for temples because of its strength and flexibility |
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Definition
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Term
| Extremely light in weight and will not rust. Can be made thin |
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Definition
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Term
| Is lightweight and can be finished in a variety of colors |
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Definition
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Term
| A synonym for nickel silver |
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Definition
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Term
| Is whitish in color, pliable, resists corrosion, and accepts a high polish |
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Definition
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Term
| Resists corrosion, malleable, accepts color well |
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Definition
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Term
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Definition
| Combination of titanium and nickel |
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Term
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Definition
| All major components at least 90% titanium by weight. No nickel |
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Term
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Definition
| All major components at least 70% titanium by weight. No nickel |
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