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20 Cards in this Set
- Front
- Back
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Modified saddle bridge |
Nose pads connected to make a continuous strap across the nose |
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Lens washer |
Thin clear liner used to make a loose fitting lens a little tighter |
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Rolled eye wire |
Plastic frame is deformed due to lenses which are to large being forced into the frame |
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Screw on pad |
Nose pads held on place by a screw |
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Push on pad |
Nose pad slips into an indented box on the pad arm |
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Clip on pad |
Nose pads held in place by a small clip |
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Twist on pad |
Nose pad attached by a twisting motion |
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Bayonet pad |
Nose pads slips onto end of the pad arm like a glove |
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Split clamp pad |
Nose pads held in place by two thin metal pieces spread apart like a rivet |
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Soldering |
Welding a metal frame to repair a break |
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Optical jig |
Small device use to hold a metal frame while welding |
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Hole guage |
Used to determine the size of the screw needed without having to put the screw in |
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Bridge reducing pliers |
Used to reduce the DBL ( distance between lenses) and bring the eyewire together |
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Thermoplastic |
Material that will bend when heated and remain in that position |
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Thermoelastic |
Material that will bend when heated and return to its original shape |
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Dissimilar segments |
Bifocal segs are different size or style to correct for vertical imbalance |
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Spotting a lens |
Marking the optical center of a lens using a lensometer |
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Side sheilds |
Safety sheilds attached to the sides of a pair of glasses |
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Lens measure |
Used to determine lens curve. Also known as lens clock |
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Nominal power |
Combined lens cures to determine lens power |
