Practice Quiz

Ophthalmic Assistant

Category - Keratometry, Tonometry, and Refractometry

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What is the radius of the corneal curvature useful for?
  1. Determining the power of a spectacle lens
  2. Determining the power of an intraocular replacement lens
  3. Fitting contact lenses
  4. Adjusting the keratometer’s mires
Explanation
Answer: C - Fitting contact lenses

The radius of corneal curvature is useful in fitting contact lenses. The base curve of a contact lens, the part that rests on the moist surface of the cornea, is measured in millimeters. The keratometer will also give you a measurement in millimeters.
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