Cenforce Professional, if it contains sildenafil, can cause temporary vision changes because sildenafil can also inhibit PDE6, an enzyme involved in light processing in the retina. This can temporarily affect blue/green color discrimination or cause blurred or altered vision. These effects are Cenforce Professional short-lived. Rarely, sildenafil has been reported in association with sudden decreased or lost vision, including a condition called non-arteritic anterior ischemic optic neuropathy (NAION). Risk factors reported with NAION include age over 50, diabetes, hypertension, coronary artery disease, high cholesterol, and smoking. If sudden vision loss occurs in either eye, stop using the medicine and seek immediate medical attention.