A child tells the school nurse that he can't see things at a distance very clearly but he can read up close fine. The nurse knows that the refractive disorder causing the ability to see distant objects less clearly than those close up is termed:
a. hyphema.
b. astigmatism.
c. amblyopia.
d. myopia.
D
Myopic patients have the ability to see near objects more clearly than those at a distance; it is caused by the image focusing beyond the retina. Hyphema includes hemorrhage in the anterior chamber and is not a refractive disorder. Astigmatism is caused by an abnormal curvature of the cornea or lens. Amblyopia is a problem of reduced visual acuity not correctable by refraction.
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