There are many different diseases that can affect the cornea. Corneal disease requiring a corneal transplant can be caused by:
- Bacterial, fungal or viral infections
- The aging process
- Genetic factors
When the cornea becomes very damaged, a corneal transplant may be needed to help restore some degree of sight. Patients in need of a corneal transplant will be placed on a waiting list for corneal tissue. The amount of time a patient must wait varies.
When the corneal transplant is finished, it can take up to a year to know how much vision has been regained. As with any kind of transplant, corneal rejection can occur. Signs of rejection may be redness or decrease in vision level. However, corneal rejection is not common.