Glaucoma :
Glaucoma is condition that causes damage to the optic nerve and leads to loss of vision . It is a collection of signs and symptoms of eye disease. It results when there is increase in intra ocular pressure (IOP) due to persistent fluid build up in the eye causes pressure on the optic nerve . Glaucoma is not always associated with increase in IOP ( Intra ocular pressure) . It does not produce any symptoms in early phase but eventually leads to loss of vision , it is also called as silent thief of sight.
Diagnosis of glaucoma involves several tests to measure intra ocular pressure , and to test optic nerve damage with several visual tests like visual field test. Treatment involves use of medication (eyedrops - prostaglandins, beta blockers, alpha adrenergic agonists, carbonic anhydrase inhibitors, miotic or cholinergic agonists, surgical intervention. Untreated glaucoma can lead to permanent loss of vision.