Cataract is a common eye condition where the lens of the eye becomes cloudy, causing blurred or hazy vision. It can occur with aging or other risk factors such as genetics, diabetes, UV exposure, and certain medications. Cataract may gradually worsen over time, affecting daily activities like reading, driving, or seeing clearly at a distance. Cataract surgery is the most effective treatment, involving the removal of the cloudy lens and replacement with a clear intraocular lens (IOL) to restore clear vision. It is a safe and commonly performed procedure, with high success rates in improving visual outcomes for patients.