Aims: We report on a case of combined nonarteritic anterior ischemic optic neuropathy
(NAAION) and cilioretinal artery occlusion resulting from misuse of sildenafil citrate (Viagra
®; Pfizer Pharmaceuticals, New York, NY).
Design: This is an observational case report.
Methods: A 54-year-old white man developed blindness in his left eye after an overdose of
Viagra. He was examined and fully evaluated.
Results: Ocular examinations revealed a left relative afferent pupillary defect and a left
combined NAAION and obstruction of the ipsilateral cilioretinal artery.
Conclusions: Although ocular side-effects of Viagra are rare, they are potentially blinding.
Patients should be warned about the side-effects and against misuse of this agent.
