We recently posted about the new studies reporting that men who used Viagra for ED had a significantly increased risk of melanoma on our blog. New studies now show there is yet another concern.
New research has indicated that about one out of every 50 men who have used Viagra may experience visual disturbances. These disturbances can include blurred vision, sensitivity to light, and even total blindness.
It has just been reported that men who carry a gene mutation associated with the inherited eye condition, retinitis pigmentosa, should not use Viagra. Retinitis pigmentosa is a hereditary condition that leads to tunnel vision and blindness. Since temporary visual disturbances were reported after sildenafil use by some patients, a study on the retinas of mice was conducted.
It is estimated that 1 in 50 men are carriers of a single copy of a gene for one of several degenerative retinal conditions, but still maintain normal vision. Researchers used mice genetically engineered to be carriers for this degenerative condition and checked if they were more susceptible to visual disturbance.
The smallest amount of sildenafil used in these experiments was five times the equivalent recommended dose for men, so it is unclear whether these results would be seen when given normal dose levels. Previous research in humans found that 50% of healthy men who take at least double the maximum recommended dose of sildenafil would experience the temporary disturbances.
The good news is that the side effects appear to be reversible. However, if you experience any sudden changes in vision or loss of vision, immediately discontinue sildenafil use and contact your health care provider.
Do you think the new reports of visual disturbances, as well as the melanoma scare, will hinder sales of sildenafil? Only time will tell.
If you have experienced visual changes or loss of vision or been diagnosed with melanoma following use of sildenafil, you may be entitled to compensation for your damages. Contact one of our Gacovino Lake attorneys at 1-800-246-HURT (4878) for more information.
