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.
Sometimes the cornea is damaged after a foreign object has penetrated the. tissue, such as from a poke in the eye. At other times, bacteria or fungi from a contaminated contact. lens can pass into the cornea. Situations like these can cause painful inflammation and corneal. infections called keratitis. These infections can reduce visual clarity, produce corneal discharges, and. perhaps erode the cornea. Corneal infections can also lead to corneal scarring, which can impair. vision and may require a corneal transplant.