A child has had eye testing. The nurse reads in the child's chart that the Hirschberg test demonstrated displacement of light reflection in one eye. What does this indicate to the nurse?
A.
Color blindness
B.
Normal ocular alignment
C.
Presence of cataracts
D.
Presence of strabismus
ANS: D
Ocular alignment is demonstrated through the Hirschberg test. When a light is shone directly into the child's eyes, the reflection should fall in the same location on the cornea of both eyes. Displacement of the corneal light reflection is indicative of strabismus. Color blindness is assessed with the Ishihara pseudochromatic charts. Cataracts are assessed via the red reflex.
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