Visual Acuity Is Measured - Page 7

What is 20/20 Vision? - Page 7

Visual Acuity Is Measured

How Visual Acuity Is Measured. Visual acuity usually is measured one eye at a time. The person having their vision tested covers one eye and reads aloud the letters on each row, beginning at the top. The smallest row of letters he or she can correctly identify indicates the distance visual acuity of that eye.

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