Fourteen men reportedly have had vision loss while taking the erectile dysfunction drug Viagra, say ophthalmologists at the University of Minnesota. The men lost only part of their vision. Cases appear to be very rare. Most of the affected men had other health problems and the structure of their optic nerve (the nerve that handles vision) raised their risk of the condition. “The number of cases is extremely small,” says Howard Pomeranz, MD, PhD, who details seven of those cases in a new report. The condition is called nonarteritic anterior ischemic optic neuropathy (NAION). “The likelihood of this happening in...
