Cataract eye surgery in karnal - Cataract obstructs the natural lens of the eye, making it difficult to see well. The lens, which is a transparent component in your eye, functions similarly to a camera lens. A cataract makes it difficult to see properly, just like a cloudy camera lens dims everything. A cataract is a clouding of the lens of the eye, which is normally clear. Seeing through foggy lenses is similar to gazing through a frosty or fogged-up window for cataract patients. It can be difficult to read due to clouded eyesight caused by cataracts.