Lead poisoning in childhood
Nov. 21, 2016
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(A) Visual field testing of the left eye at presentation. In the visual field of the left eye, defects include an inferior nasal step and an inferior altitudinal defect to less visible stimuli. The right eye shows similar defects. (B) Following 1 week of treatment with prednisone 100 mg/day, repeat examination shows progression of visual field loss in the left eye. There is now a dense paracentral scotoma (likely an evolving cecocentral scotoma) and increased definition of the inferior nasal step. Also of note is the increasing constriction of isopters to the larger or brighter stimuli. (Contributed by Dr. Mark Duffy.)