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------------------------------------------------ To pass the NS vision test, your visual acuity must be better in at least one eye than:

A. 20/40
B. 20/30
C. 20/20
D. 20/50

Answer :

Final answer:

To pass the NS vision test, your visual acuity must be better in at least one eye, with 20/40 or better being the standard.

Explanation:

In the NS vision test, your visual acuity must be better in at least one eye. Visual acuity refers to the clarity or sharpness of vision. It is measured using the Snellen chart, which presents standard Roman letters in various sizes. The result of the test is expressed as a fraction, such as 20/40, 20/30, 20/20, or 20/50.

For example, if someone has 20/40 vision, it means they can see letters at a 20-foot distance that a person with normal acuity can see from 40 feet away. Therefore, in order to pass the NS vision test, your visual acuity must be at least 20/40 or better.

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