Dr. Howard Pomeranz, director of neuro-ophthalmology at the University of Maryland Medical Center, said he has traced five men with permanent vision loss as a result of using the anti-impotence drug Viagra. “Reports of serious visual problems have been extremely rare,” scoffed a Pfizer spokesman, noting the men involved all had vascular problems related to diseases such as diabetes and may have been prone to vision problems anyway. (Reuters) ...“Can I do it until I need glasses?” — the Next Generation.