If you have existing eye problems and are considering taking Vidalista 20, which contains Tadalafil (a PDE5 inhibitor similar to Sildenafil, used to treat erectile dysfunction), you should exercise caution. Tadalafil can potentially cause certain eye-related side effects or interact with pre-existing eye conditions. Here are some important considerations: 1. Eye Problems and Tadalafil (Vidalista 20) Vision Changes: Like other PDE5 inhibitors (such as Viagra or Cialis), Tadalafil can cause visual disturbances as a side effect, including blurry vision, a blue tinge to vision, or sensitivity to light. These side effects are usually temporary but may be more pronounced in individuals with pre-existing eye conditions. Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION): There have been reports of NAION, a rare condition that causes sudden vision loss in one eye, associated with the use of PDE5 inhibitors, including Tadalafil. If you have a history of NAION, you should avoid using Vidalista 20 or any other similar medication, as it may increase the risk of this condition. Those with other risk factors for NAION (such as diabetes, high blood pressure, or heart disease) should discuss this risk with their doctor before considering Vidalista 20. 2. Who Should Take Caution People with the following eye conditions should consult their healthcare provider before taking Vidalista 20: History of NAION (Non-Arteritic Anterior Ischemic Optic Neuropathy) or other eye conditions involving blood flow to the optic nerve. Retinitis Pigmentosa (a genetic disorder affecting the retina): While rare, those with this condition should be cautious when taking PDE5 inhibitors as it can affect how the medication works in the body. Glaucoma: If you have a history of eye pressure issues such as glaucoma, talk to your doctor before using Vidalista 20, as this can affect intraocular pressure. Other eye conditions: If you have any other eye diseases or conditions, particularly those affecting the blood vessels or optic nerve, you should check with your eye doctor or general physician before taking this medication. 3. Consulting Your Doctor Pre-existing Eye Conditions: Before starting Vidalista 20, it's essential to inform your doctor if you have a history of eye problems such as glaucoma, macular degeneration, or diabetic retinopathy. They can assess the risks and help you decide if Vidalista 20 is safe for you.