Feds Probe Viagra-Blindness Link

Health officials investigate reports of blindness among users of impotence drugs Viagra and Cialis. But so far, no evidence has turned up that pins the blame on the drugs.

WASHINGTON -- Federal health officials are examining rare reports of blindness among some men using the impotence drugs Viagra and Cialis, a disclosure that comes at a time when the drug industry can ill afford negative publicity about another class of blockbuster medicines.

This type of blindness is called NAION, or non-arteritic anterior ischemic optic neuropathy. It can occur in men who are diabetic or have heart disease, the same conditions that can cause impotence and thus lead to Viagra use. ...

Source: Wired News