Why an Intraocular Lens Is Needed After Cataract Surgery | Dr Mahipal S. Sachdev | Centre for Sight After cataract surgery, the cloudy natural lens of the eye is removed to restore vision. In this video, Prof. (Dr.) Mahipal S. Sachdev from Centre for Sight explains why an intraocular lens (IOL) is necessary to replace the original lens. Just like a camera needs a lens to focus, your eye requires this artificial lens to see clearly. He also discusses how complications can affect lens placement an