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21 Cards in this Set
- Front
- Back
Wetting angle |
The angle a bead of liquid makes with the surface of a 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 2 curves on the anterior surface and one on the back |
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Back toric |
A lens with 2 curves on the posterior surface and one on the front |
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Bitoric |
A lens with 2 curves on the anterior and posterior surfaces |
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Wetting solution |
Designed to temporarily change a hydrophobic surface to a hydrophilic |
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Warpage |
Permanent bending of a rigid lens |
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Corneal cap |
Central zone of cornea. 3-5 mm 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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Base curve |
Central back surface of a lens |
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Bicurve lens |
A lens having one peripheral curve around the base curve |
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Tricurve lens |
A lens having 2 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 base curve of a hard contact |
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V groove gauge |
Plastic ruler to measure lens diameter |
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Shadow graph |
Lens inspection device for examining lens periphery and diameter |
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Polymethlymethacrylate |
Original main ingredient in hard contacts lens |
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J |
J |
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Artificial tears |
Wetting agents for the cornea |