Corneal dystrophies are a group of genetic disorders most often found in the cornea (the clear front surface of the eye that lies directly in front of the iris and pupil).
A corneal laceration is a cut in the cornea, usually caused by the contact of some sharp object with the eye, whereas a corneal abrasion is a scratch on the cornea usually superficial and does not leave a scar.
Corneal transplant or keratoplasty involves replacing the opaque corneal tissue when a corneal scar causes visual loss. Keratoplasty is currently highly developed.