비아그라에 대해 거의 알려지지 않은 사실.
sudden vision reduction in a single or the two eyes. Sudden eyesight loss in one or both of those eyes can be quite a indication of a serious eye difficulty termed non-arteritic anterior ischemic optic neuropathy (NAION). Quit using VIAGRA and simply call your Health care provider immediately Should you have any unexpected eyesight reductionMayo Cl