Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  mushroom(noun) common name for an edible agaric (contrasting with the inedible toadstool) 2  mushroom(noun) mushrooms and related fleshy fungi (including toadstools, puffballs, morels, coral fungi, etc.)
A cornea transplant is an operation used to remove all or part of a damaged cornea and replace it with healthy cornea tissue from the eye of a suitable donor. A cornea transplant is an operation used to remove all or part of a damaged cornea and replace it with healthy cornea tissue from the eye of a suitable donor.
Another corneal disorder is corneal dystrophy, which is an inherited disease that causes the cornea to become cloudy. If the cornea is damaged or diseased to the point that vision is seriously impaired, a corneal transplant may be necessary. In a corneal transplant, a cornea from a donor is surgically removed and used to replace the damaged cornea.