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Organophosphates have rarely been reported to cause various ocular sequelae including retinal degeneration. Retinal manifestations have been rarely reported and poorly characterized. We describe a case of a 76-year-old man with vision loss beginning in his 20s due to acute on chronic exposure to dimethoate, an organophosphate. He presented with bilateral geographic macular atrophy and midperipheral pigmentary clumping which we characterized by dilated fundoscopic examination, optical coherence tomography, and fundus autofluorescence.