Q:

Visual acuity is

safaTerkawi
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2022-08-10
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 Visual acuity is.

  1. A measure of the sensitivity of the retina to light.
  2. Greater in a person with 6/12 (0.5) vision than in one with 6/9 (0.75)
  3. Greater using central than using peripheral vision.
  4. Greater using one eye than using both eyes.
  5. Greater in normal than in colour-blind people.
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All Answers

safaTerkawi
2022-08-10
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A. False It is a measure of the ability to distinguish between (resolve) two points.

B. False Acuity is expressed as the ratio of someone’s reading distance compared with average normal.

C. True Visual acuity is maximal at the fovea where cone receptors are predominant.

D. False The two images reinforce each other.

E. False Visual acuity does not depend on distinguishing colours.

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