Labs Imaging Treatment Discussion o
A 37-year-old missionary returning home from central Africa comes to the tropical medicine department of the local university for an evaluation of blurred vision and seeing "halos" around lights at night.
He also complains of marked itching while showering and notes that his hair has been turning prematurely gray. He has been taking weekly doses of chloroquine for the suppression of hyper-
endemic malaria. ^h o c:
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