The cornea is the transparent outer layer at the front of the eyeball, through which light enters the eye.
Disease and injury may cause it to become cloudy, decreasing vision or causing blindness.
The first cornea transplant was performed in 1905.
Because there is no blood involved, transplanted corneas have no problems with rejection.
The quality of the donor's vision does not affect donation.
A prosthetic eye can be inserted after eye removal, so there is no change in the appearance of the donor for an open casket funeral.
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