Vidalista 20 mg contains Tadalafil, which is used to treat erectile dysfunction (ED). Regarding safety for people with vision problems, here’s what you need to know: Tadalafil and other PDE5 inhibitors (like Sildenafil) have been linked, though very rarely, to a serious eye condition called NAION (non-arteritic anterior ischemic optic neuropathy). NAION causes sudden vision loss due to decreased blood flow to the optic nerve. If you have pre-existing vision problems, especially retinitis pigmentosa or a history of NAION, talk to your doctor before using Vidalista 20. Immediately report any sudden loss of vision, blurred vision, or changes in eyesight. Do not take Vidalista if you have been advised against PDE5 inhibitors due to eye conditions. Use Vidalista only as prescribed by a healthcare provider. Inform your doctor about all your health conditions, especially any eye diseases. Regular eye check-ups are important if you use ED medications long term. Vidalista 20 mg is generally safe for most people, but if you have vision problems or risk factors for eye diseases, consult your doctor before using it. Early detection of any vision changes is critical.