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20 Cards in this Set
- Front
- Back
Three Point Touch |
An imaginary triangle of fitting points on the two temples and bridge. |
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Negative Face Form |
Bending the frame front so it contrasts the natural curve of the face. |
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Low Temple Attachment |
The temple connects to the frame front in a low position to make the face look shorter. |
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High Temple Attachment |
the temple connects to the frame front in a high position to make the face look longer. |
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Standard Frame Alignment |
Basic alignment of a frame front adjusted for the patient. |
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Telegraph Effect |
Upside down frames rock unevenly when placed on a flat surface. |
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Bowing the Temple |
Bending the temples so the wrap around the head in a bowing out manner. |
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Nose Pads |
Pads to rest the weight of the frame on the sides of the nose. |
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Guard Arms |
Short metal piece where the nose pads connect and can be adjusted. |
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Splay Angle |
The angle of the nose pads in relation to the natural angle of the nose. |
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Bevel |
A "V" shaped edge on the periphery of a spectacle lens to hold it in the eye wire. |
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Safety Bevel |
Smoothing of the sharp edge of the bevel so the patient dosen't get cut. |
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Groover |
Equipment used to place a groove in the periphery of a lens to be held in place by a nylon cord. |
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Focimeter |
Same as lensometer. |
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Semi-Finished Blank |
Lens with a finished front or base curve and an unfinished back curve. |
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Finished Lens Blank |
Lens with front and back finished curves needing to be edged into a frame. |
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Layout |
The process of preparing a lens for blocking and edging. |
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Blocking |
Process of sticking a chuck or block to the front of the lens to be edged. |
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Datum Line |
An imaginary line horizontally through the frame that is half of the "B". |
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Pattern-less Edger |
Able to cut a lens shape by tracing the frame eye wire. |