Certified Ophthalmic Assistant Practice Exam

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Study for the Certified Ophthalmic Assistant Exam. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What best determines the dioptric power of the cornea?

Agar
Impact-resistance level
Keratometer readings
Universal precautions

The correct answer is: Keratometer readings

The dioptric power of the cornea is best determined by keratometer readings. A keratometer is an ophthalmic instrument used to measure the curvature of the cornea, which helps in determining the dioptric power of the cornea. This measurement is important in assessing refractive errors like astigmatism and in fitting contact lenses. Options A, B, and D are not correct because they do not pertain to the measurement of the dioptric power of the cornea. Agar is a substance used in microbiology, impact-resistance level relates to the durability of eyewear, and universal precautions refer to infection control practices in healthcare settings. These options are not relevant to determining the dioptric power of the cornea.