Tadalafil (Vidalista 10 mg) can affect vision in some people, but this is uncommon and usually mild. When vision changes may occur Vision-related side effects can happen: Within a few hours after taking the tablet (when the drug is at peak effect) Sometimes during the period the medicine is active in the body (up to 24–36 hours) Possible vision-related side effects Blurred vision Increased sensitivity to light A slight blue/green tint in vision (rare, more commonly reported with sildenafil than tadalafil) Temporary difficulty distinguishing colors Why it happens Tadalafil can mildly affect enzymes in the eye (PDE5/PDE6 interaction), which may influence visual perception in some individuals. When to be concerned Seek medical attention if you experience: Sudden vision loss in one or both eyes Persistent blurred vision Eye pain or severe visual disturbances Vision changes that do not go away after the drug wears off Important notes Vision side effects are rare with tadalafil, especially at lower doses like 10 mg Risk may increase if combined with other medications, alcohol, or underlying eye conditions