What is the visual acuity of a person who can see at 20 feet but would need to be at 80 feet to see clearly without refractive error?

Prepare for the JCAT Independent Practice Exam! Study with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

The visual acuity of a person who can see at 20 feet but requires to be at 80 feet to achieve clear vision indicates that their visual performance is significantly lower than normal. In visual acuity assessment, the first number (20) represents the distance from which the test is conducted, while the second number (80) signifies the distance at which a person with normal vision can see the same detail clearly.

This means that what a person with normal vision can see at 80 feet, this individual can only see clearly at 20 feet. Therefore, their visual acuity is recorded as 20 over 80, often expressed as 20/80. This ratio indicates that the person's vision is worse than average, as 20/80 visual acuity means that they must be closer to an object in order to see it clearly compared to someone with standard vision, who would be able to see it from a further distance.

Thus, a visual acuity of 20/80 signifies reduced clarity and can often necessitate corrective lenses or other visual aids.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy