Can Erectile Dysfunction (ED) medications cause blindness?
Recently, the use of Viagra (sildenafil) has been reported (Journal of Neuro-Ophthalmology. 25(1):9-13, March 2005) as causing blindness in men within 36 hours of initial use. One report indicated that an eye examination can detect an individual at risk. The side effect of this medication is thought to cause a condition known as non-arteritic anterior ischemic optic neuropathy (NAION). Basically, NAION is a malfunction of the optic nerve. The optic nerve carries the light (images) from the retina to the brain. When this process is interrupted, the eye can become blind. An eye examination can determine if an individual is at risk for developing blindness while taking Viagra. The report indicated that 34 new cases emerged with one person suffering vision loss in both eyes. The average ages ranged from 50 to 69. Some of the men had pre-existing conditions such as high blood pressure, cholesterol or diabetes. There is no specific treatment for this condition. The medication was stopped and
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