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The correlation between Viagra and light sensitivity has long been acknowledged by Pfizer, the manufacturer of blockbuster erectile dysfunction drug Viagra. Viagra patient product labeling warns consumers that Viagra users may experience visual side effects such as mild and temporary changes in blue and green colors and an increased sensitivity to light. According to FDA reports about Viagra and light sensitivity, approximately three percent of all Viagra users experience temporary changes in their vision after taking Viagra.

In May 2005, experts from the American Academy of Ophthalmology urged the FDA to take the problem of Viagra and light sensitivity more seriously. These doctors report that taking Viagra, especially at higher doses, can cause retinal dysfunction that can last for a number of hours. Clinical studies have shown that Viagra user’s retinal functioning can drop 30 to 50 percent for at least five hours after taking a dose of Viagra. A Stanford University doctor has suggested that men with retinal eye conditions should use Viagra with caution and take the lowest dose possible because they are more at risk for the ill effects of Viagra and light sensitivity.

Viagra Light Sensitivity Information Mounting

While these Viagra and light sensitivity reports were being made by medical experts across the United States, other information was mounting about additional ocular risks posed to Viagra users. In the beginning of June 2005, the FDA announced that they were investigating fifty cases of blindness that developed in patients taking Viagra. This investigation comes five years after the first report of blindness attributed to Viagra use. This case was discovered by an ophthalmologist at the University of Minnesota, who has since found an additional 14 cases of blindness potentially caused by Viagra.

Viagra and light sensitivity may be related to the later development of a condition called NAION, an acronym for nonarteritic anterior ischemic optic neuropathy. NAION is the leading cause of blindness in people over the age of fifty. This condition is characterized by visual blurriness in one or both eyes, painless visual disturbances, and eventually the complete loss of vision in on or both eyes. It is unclear whether or not victims of Viagra and light sensitivity side effects are at a greater risk of developing NAION. There are, however, a number of similarities between the factors contributing to erectile dysfunction and those for NAION.

Side Effects Leading to Lawsuits

Some medical and legal experts argue that Pfizer has failed to acknowledge the link between Viagra and blindness and underestimated the risks associated with Viagra and light sensitivity. This argument has provided the legal grounds for lawsuits filed against Pfizer in June 2005. Civil lawsuits have been filed on behalf of Viagra users that have suffered ocular side effects from Viagra use. In one such suit, the plaintiff is seeking $75,000 in damages related to his loss of vision arguably caused by Viagra use.

Experts expect more lawsuits to be filed in the near future, as more Viagra users are diagnosed with NAION and other ocular diseases. If you have taken Viagra and light sensitivity or loss of vision has affected you, you may wish to contact a qualified and experienced attorney who can determine your legal rights and options.

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