You can't make headlines like this up.

<em><strong>FDA studying possible Viagra-related blindness</strong>

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.

The Food and Drug Administration still is investigating, but has no evidence yet that the drug is to blame, said spokeswoman Susan Cruzan.</em>

… I'm not thinking the Viagra is directly to blame, either… ;-)