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20 Cards in this Set
- Front
- Back
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Wetting angle |
The angle a bead of liquid makes with the surface of the lens |
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Spherical lens |
A lens with only one curve on the front and one curve on the back |
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Front toric |
A lens with two curves on the anterior surface and one on the back |
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Back toric |
A lens with two curves on the posterior surface and one on the front |
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Bitoric |
A lens with two curves on the anterior and posterior surface |
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Wetting solution |
Designed to temporarily change a hydrophobic surface to a hydrophillic |
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Warpage |
Permanent bending of a rigid lens |
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Corneal cap |
Central zone of the cornea 3-5mm in diameter |
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Apical zone of cornea |
Central steepest part of the cornea |
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Contact lens blank |
Sheet or rod of plastic used to make contact lenses |
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Artificial tears |
Wetting agents for the cornea |
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Base curve |
Central back surface of a lens |
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Bicurve lens |
A lens having one peripheral curve around the the base curve |
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Tricurve lens |
A lens having two peripheral curves around the base curve |
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Junctional zone |
Where the base curve and the peripheral curves meet |
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Blend |
Smoothing of the junctional zones |
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Radiuscope |
Instrument used to measure the base curve of a hard contact |
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V-Groove gauge |
Plastic ruler to measure lens diameter |
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Shadowgraph |
Lens inspection device for examining lens periphery and diameter |
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Polymethylmethacrylate |
(PMMA) Original main ingredient og hard contact lenses |
