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Ophthalmic Assistant

Category - Visual Assessment

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Most visual acuity charts are calibrated with the intention that the patient stands how far from it?

40 feet
30 feet
20 feet
15 feet

Explanation

Answer: C - 20 feet

Most visual acuity charts are calibrated with the intention that the patient stands 20 feet from it. Generally speaking, 20 feet has been considered an appropriate distance for assessing vision for distance.

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