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Retinal lead toxicity

A 35-year-old female who had suffered from acute lead poisoning when she was 22 years old, presented 13 years later with loss of vision in the right eye and normal vision in the left eye. She had a pale disc, narrowed arterioles and mid-peripheral heavy pigmentation, right eye being more affected than the left eye. Electrodiagnostic tests identified marked asymmetry of visual function. We would postulate lead retinal toxicity as the cause of the asymmetric findings.