Coordination and control – the nervous system

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Question 30
Medium

An optometrist examines a patient's eye and obtains the optical ray diagram shown below.

Hyperopic eye

Which of the following correctly identifies the visual defect, a primary physiological cause of this condition, and the type of lens needed to correct it?

Long-sightedness (hyperopia); Eyeball is too long; Concave lens\text{Long-sightedness (hyperopia); Eyeball is too long; Concave lens}Long-sightedness (hyperopia); Eyeball is too long; Concave lens

Long-sightedness (hyperopia); Lens is insufficiently curved (too weak); Convex lens\text{Long-sightedness (hyperopia); Lens is insufficiently curved (too weak); Convex lens}Long-sightedness (hyperopia); Lens is insufficiently curved (too weak); Convex lens

Short-sightedness (myopia); Eyeball is too short; Convex lens\text{Short-sightedness (myopia); Eyeball is too short; Convex lens}Short-sightedness (myopia); Eyeball is too short; Convex lens

Short-sightedness (myopia); Lens is excessively curved (too strong); Concave lens\text{Short-sightedness (myopia); Lens is excessively curved (too strong); Concave lens}Short-sightedness (myopia); Lens is excessively curved (too strong); Concave lens

Coordination and control – the nervous system Questions

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