after taking pill is lept with my wife but next day when i woke my left eye vision was very bad .and now after three days passed but no improvement in my vision .so how should i get back on my normal vision even already i have been using my glasses for more than 30 years
Viagra can cause ocular side effects, so please see your doctor if it still hasn't resolved.
Sildenafil is selective for phosphodiesterase-5 (PDE5). It has lesser affinity for other PDE isoenzymes, one of which is PDE6, an enzyme found in the retina. This lower selectivity is thought to be the basis for abnormalities related to color vision observed with higher doses or plasma levels.
Nonarteritic anterior ischemic optic neuropathy developed in one eye within minutes to hours after ingestion of sildenafil. Four of the five patients had no vascular risk factors for ischemic optic neuropathy.
Ocular side effects have included mild and transient blue or colored-tinged vision, sometimes associated with photosensitivity or blurred vision. Less common ocular side effects (less than 2% of patients) have included mydriasis, conjunctivitis, photophobia, tinnitus, eye pain, eye hemorrhage, cataract, and dry eyes. Several cases of optic neuropathy have been associated with sildenafil use.
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