In most people the optic nerve damage occurs because there is increased pressure inside the eye, usually as a result of impaired circulation and drainage of eye fluid called aqueous.
Glaucoma usually causes no pain or discomfort and significant side vision can be lost without a person noticing. The risk of developing glaucoma increases if you are over 50 years of age and if there is a family history of the disease.
This disease is usually treatable with eye drops which are used every day over a patient’s lifetime. Sometimes drops are not sufficient and surgery needs to be performed to cause pressure reduction. These surgeries include trabeculectomy, selective laser trabeculoplasty, iridotomy, molteno valve surgery and cyclodiode.