title: Self-injected retinal emboli.
abstract: Twelve patients with bilateral intraretinal talc emboli were examined. Each patient had self-injected large doses of methylphenidate (Ritalin) for one or more years. All fundi showed yellow-white particles in the macular area, and two eyes had reduced vision secondary to retinal vascular occlusion. The clinical syndrome, ophthalmoscopic appearance, and fluorescein angiographic findings of self-injected retinal emboli are presented, and the pathogenesis is discussed.
mesh_terms: D000328:Adult; D002196:Capillaries; D004617:Embolism / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007275:Injections, Intravenous; D008266:Macula Lutea; D008297:Male; D008774:Methylphenidate / Q000008:administration & dosage / Q000009:adverse effects*; D008875:Middle Aged; D009887:Ophthalmoscopy; D012171:Retinal Vessels; D012651:Self Medication / Q000009:adverse effects*; D019966:Substance-Related Disorders
chemical_list: D008774:Methylphenidate