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20 Cards in this Set
- Front
- Back
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Hypoxia |
Oxygen dificiency |
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Toric lens |
Co fancy containing two powers and therefore must have an axis of orientation |
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Keratitis |
Inflammation of the cornea |
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Keratoconjunctivitis |
Inflammation of the entire area of the cornea and conjunctiva |
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Monovision |
A single vision lens for distance in the dominant eye,and a single vision near Rx for the other eye |
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Orthokeratogoly |
A technique of straightening the cornea by a hard retainer lenses |
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Photophobia |
Light sensitivity |
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X-Chrome lens |
A red contact lens which aids the color deficient patient |
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Taco test |
Procedure to determine if a soft contact lens is inside out |
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Circumcorneal injection |
Redness around the limbus surrounding the cornea |
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Circumcorneal indentation |
Ditch like depression around the limbus caused by a tight lens |
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Enzyme cleaner |
Used to remove protein deposits from the lens surface |
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Corneal ulcer |
A defect of the cornea caused by hypoxia,trauma,or infection |
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Loose lens |
A small or flat lens that has excessive movement |
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Prism ballest |
A thickening of the bottom of the contact to prevent rotation |
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Truncation |
Cutting a small portion off the bottom to stabilize a toric contact lens |
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Saggital vault |
The space between the central posterior curve and a flat surface |
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Spectacle blur |
Blurred vision immediately after hard contact lens wear |
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Edge stand-off |
Space between the lens edge and the cornea,caused by a loose fitting lens |
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Elasticity |
Ability of a contact to stretch and return Toni's natural shape (tensile strength) |
