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.
A corneal transplant is procedure in which a cloudy or misshaped cornea is removed and replaced with a clear, donated cornea. The cornea is the clear outer layer on the front of the eye. The surgery is done to improve your vision. Penetrating keratoplasty is another name for this procedure.