Cenforce contains sildenafil, and sildenafil can affect vision in some people. Temporary effects can include blurred vision, increased sensitivity to light, or a blue/green color tinge. These are generally mild and transient. D DailyMed +1 Sudden loss or major decrease in vision in one or both eyes is rare but serious. If that happens, stop taking sildenafil and seek urgent medical attention, because it can be associated with NAION, a condition that can cause permanent vision loss. D DailyMed +1 Risk may be higher in people with certain factors such as age over 50, diabetes, high blood pressure, heart disease, high cholesterol, smoking, or a “crowded” optic disc. D DailyMed If you're currently experiencing blurred vision or another visual change after taking Cenforce, tell me what you're seeing and what strength you took (e.g., 50 mg or 100 mg) and when you took it.