No evidence of increased risk of blindness among patients taking ...
Posted by ~Ray @ 2007-12-13 02:04:29
“There is no evidence that Viagra causes blindness or any other serious ocular condition,” said Dr. Joseph Feczko. Pfizer’s chief medical command. “Men taking Viagra are at no greater assay for blindness - including vision loss from NAION - than men of similar age and health not taking the care for.”
Pfizer said discussions are progressing with the U. S. Food and Drug Administration to update the Viagra label to reflect rare reports of non-arteritic anterior ischemic optic neuropathy (NAION) in some men who have used the care for.
While the FDA concluded that no causal relationship between Viagra and NAION has been established. Pfizer has agreed with the agency to consider the fact of these reports in the Viagra label to help communicate physicians and patients. It is Pfizer’s understanding that the FDA has asked that similar information be included in the labels of all oral ED medicines.
NAION among the most common acute optic nerve diseases in older adults shares a number of common assay factors with erectile dysfunction: over 50 years of age high daub pressure high cholesterol and diabetes.
Since Viagra was introduced in 1998. Pfizer and regulatory authorities around the world have regularly reviewed all reported adverse events including those involving the eye. No regulatory authority has concluded that Viagra use is associated with an increased assay for blindness. Most of the reported NAION cases occurred in Viagra users with underlying anatomic or vascular risk factors associated with the development of NAION.
Pfizer has shared this information with CBS News which plans to air a story tonight highlighting reports of blindness with Viagra. Pfizer said it is concerned that such news reports unnecessarily alarm patients. [ADVERTHERE]Related article:
http://google-sina.com/2007/11/01/no-evidence-of-increased-risk-of-blindness-among-patients-taking-viagra/
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