A Pterygium refers to a wing-shaped growth of abnormal tissue onto the clear cornea, from the surrounding conjunctiva and underlying tissue. It may result poor cosmesis, ocular discomfort such as tearing and foreign body sensation, it can become red if inflamed and may affect vision by inducing irregular astigmatism.
Pterygium Surgery is performed to remove this tissue from the cornea. Healthy conjunctiva (an autograft) is harvested from another part of the eye to replace the abnormal, excised pterygium. Occasionally, an amniotic membrane graft may be used to aid healing.