A cataract is a clouding of the lens of the eye, which is typically clear. This clouding prevents light from passing through the lens and focusing on the retina, leading to symptoms such as blurry vision, faded colors, and difficulty seeing at night. Cataracts are most commonly related to aging, but they can also be caused by other factors such as eye conditions, past eye surgery, medical conditions like diabetes, and long-term use of steroid medicines
. Cataract surgery is the most common treatment, which involves removing the clouded lens and replacing it with a clear artificial lens called an IOL (intraocular lens)
