Practice Quiz

Ophthalmic Assistant

Category - Keratometry, Tonometry, and Refractometry

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The refraction that a patient likes the most is known as the
  1. comfortable refraction.
  2. subjective refraction.
  3. objective refraction.
  4. cyclopegic refraction.
Explanation
Answer: B - subjective refraction.

The refraction that a patient likes the most is known as the subjective refraction. Typically, subjective refraction is a refinement of the objective refraction. It can be gathered by asking the patient to look through a phoropter at some type of screen or chart while the examiner switches through a variety of spherical and cylindrical lenses and asks the patient which one they prefer.
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