Viagra and vision effects

viagraMost men, making their choice in favor of Male Viagra, want to know if this medication can cause permanent vision loss and what risk for this side effect of the drug they have. Viagra was paid great attention for vision changes associated with the use of the drug reported by men who took it as a treatment for ED. There were several reports of sudden vision loss and other ocular effects linked to Viagra use in some men. This fact forced the FDA to put special warning on the medication. The warning contains the information about severe side effects of Viagra including vision loss. Still severe side effects are extremely rare and happen only in men who take too much of this medication and have other risk factors.viag Men who take more than 100 mg of Viagra per day are more likely to experience vision side effects. Viagra studies detected that the vision side effects are dose-related. Men taking larger dose than the max 100 mg are at greater risk for side effects including vision changes. The studies found that sildenafil inhibits selectively PDE5 enzyme, still in larger doses it may block other PDE enzymes including those that are found in retinal photoreceptors. The inhibition of this enzyme in the retina causes vision changes including: light sensitivity, blue vision and vision loss. viMen with retinal problems or a condition known as NAION (non-arteritic anterior ischemic optic neuropathy) have more chances to experience ocular side effects of Viagra. Generally, general practitioners and ophthalmologists do not recommend such patients to use any PDE5 inhibitors. Other men who do not have any risk factors still may have vision changes while taking Viagra. Usually these side effects are temporal and disappear within 1- 2 hours post dose. To avoid the risks of vision side effects, consult your doctor before Viagra use.

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