The ophthalmologist examining a client's eyes documents that the client has astigmatism. Which of the following describes this condition?
A) Elongation of the eyeball
B) Shorter than normal eyeball
C) Loss of elasticity of the lens
D) Unequal curvature in shape of the lens
D
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Astigmatism is an unequal curvature in shape of the lens or cornea, myopia is elongation of the eyeball, hyperopia is a shorter than normal eyeball, and presbyopia is loss of elasticity of the lens or poor accommodation.
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