Viagra, or sildenafil, primarily inhibits phosphodiesterase-5 (PDE5), an enzyme that breaks down cyclic GMP. Increased cyclic GMP relaxes blood vessels, leading to improved blood flow. This mechanism explains Viagra’s effectiveness in treating erectile dysfunction.
While primarily affecting blood vessels, Viagra’s impact on ocular blood flow is relevant. Increased blood flow in the eye can potentially influence intraocular pressure (IOP).
Studies show a potential for mild and temporary IOP elevation in some individuals after taking Viagra. This elevation is generally not significant enough to cause problems for people with healthy eyes. However, for individuals with glaucoma, a condition already characterized by elevated IOP, the added pressure could be concerning.
| Pre-existing Glaucoma | Increased risk of IOP spike; consult ophthalmologist before Viagra use. |
| Dosage of Viagra | Higher doses may correlate with a slightly greater IOP increase. |
| Individual Sensitivity | Responses to Viagra vary; some experience no noticeable IOP change. |
Consult your ophthalmologist and physician before using Viagra, especially if you have glaucoma or any other eye condition. They can assess your risk and advise on appropriate management.
