Glaucoma describes a group of eye conditions that damage the optic nerve. It is a silent disease and shows no signs or symptoms until it has reached advanced stages but the vision loss it causes is ongoing and can become permanent. Fortunately, it is possible to detect glaucoma in its early stages. With early detection and intervention, it is possible to control it through surgery or medication. Being regular with your eye checkups is the single most effective way to diagnose glaucoma early and halt the vision damage.