How good is a corneal transplant and cateract from a cadaver?

Transplant is good: Corneal transplants to replaced diseased corneas come from the recently deceased (cadavers). Cataracts do not come from that source, but the cataractous lens can be replaced with an appropriately powered plastic lens placed inside the eye. Corneal transplants are generally excellent, provide good vision and frequently may save an eye.

Very good for cornea: Corneal tissue comes from human donors who wished to have their corneas help others. Outcomes are excellent in most corneal diseases. Cataracts are removed and replaced with a manmade plastic implant do they are not taken from cadavers.