Did Pfizer Keep Viagra Users in the Blind of Potential Risks?
Sounds a bit funny at first, but unfortunately it is no joke. Researchers at the University of Minnesota have associated Viagra use with a rare type of blindness called non-arteritic anterior ischemic optic neuropathy or NAION. The study was published in the latest issue of the Journal of Neuro-ophthalmology. A press release by the University states:
The onset of NAION within hours after ingestion of Viagra in 14 patients supports an association between the use of the drug and NAION. Based on the fact that 14 cases of NAION have now been reported soon after the use of Viagra, the researchers believe that ophthalmologists should ask all men with NAION about the use of Viagra, and recommend that patients with a history of NAION in one eye be cautioned that Viagra may increase the risk of NAION in the fellow eye.
The FDA has 42 reports of the blindness, 38 among users of Viagra and four among the users of Cialas, another popular erectile dysfuntion drug.
Read related article here.
I am a 56 years of age. I started taking viagra in may of 98. I am now legally blind. treated for diabetes, leaking blood vessels in the eyes, I have cystoid macular edema. I am now thinking it may have been from viagra. will their be a class action suit? Pat Kelly
As you know, macular edema occurs when fluid and protein deposits collect on or under the macula, causing it to thicken and swell. The swelling may distort a person's central vision. The blindness associated with Viagra use is secondary to a slightly different disorder. Non-arterial anterior ischemic optic neuropathy involves a clotting event that leads to the swelling of the optic nerve, causing reduced vision. Therefore I do not believe that Viagra caused your condition. Of course, I would consult your physician regarding the cause and treatment of your disorder.
I do not know of any class actions filed involving Viagra and NAION. Should any arise, the information will be posted on this blog.