Certified Ophthalmic Assistant Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Ophthalmic Assistant Exam with confidence. Utilize comprehensive quizzes, interactive questions, and invaluable study resources to help you succeed on your exam day!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

Which instrument is used to measure the curvature of the central part of the cornea?

  1. Lensmeter

  2. Sphygmomanometer

  3. Keratometer

  4. Retinoscope

The correct answer is: Keratometer

The keratometer is specifically designed to measure the curvature of the cornea's central part, making it the appropriate instrument for this task. It operates by projecting a series of illuminated rings onto the cornea and analyzing the reflection of these rings, allowing for precise measurement of the corneal shape. This data is crucial in various applications, including fitting contact lenses, pre-surgical assessments for procedures like LASIK, and diagnosing corneal conditions. In contrast, other instruments have different purposes: the lensmeter is used to measure the prescription of lenses; the sphygmomanometer is designed for measuring blood pressure; and the retinoscope evaluates the refractive error of the eye rather than the cornea's curvature. Thus, the keratometer stands out as the correct choice for measuring corneal curvature.

More Questions Like This