Which manifestation in a 5-month-old child could indicate visual problems?
a. Lack of binocularity
b. Visual acuity of 20/50
c. Strabismus
d. Hyperopia
C
Strabismus is normal in the young infant but should not be present after 3 months of age. Binocularity, the ability to fixate on one visual field with both eyes, is not present at birth but is established by 6 months of age. Visual acuity by 4 months of age is between 20/50 and 20/80 . Hyperopia, or farsightedness, is normal until about 7 years of age.
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