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Threshold for vision referral for Grade 1 (age 6) thru adult

A) 20/20 vision
B) 20/30 vision
C) 20/40 vision
D) 20/50 vision

1 Answer

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Final answer:

The threshold for vision referral for Grade 1 (age 6) through adult is 20/40 vision.

Step-by-step explanation:

The threshold for vision referral for Grade 1 (age 6) through adult is 20/40 vision. This means that a person with 20/40 vision can see at 20 feet what a person with normal vision can see at 40 feet. It is considered a referral threshold because it indicates a potential issue with visual acuity.