The early visual changes are very slight and do not affect the central vision - the center portion of what is seen when looking straight ahead or reading. Glaucoma usually occurs in both eyes, but extra fluid pressure often begins to build up first in only one eye. It occurs in people of all ages, from children to older adults, but it is more likely to develop in people who are over 35 years old, very near-sighted, or diabetic. The tendency to develop glaucoma may be inherited, as relatives of glaucoma patients are more likely to develop glaucoma themselves. Vision lost as a result of glaucoma usually cannot be recovered, but early diagnosis and careful, lifelong treatment can help prevent further visual damage.
Ophthalmologists recommend a glaucoma check as part of a regular eye examination.
Chronic glaucoma is more common and creeps up on a person without him knowing it and slowly robs him of his eyesight. Elevated intraocular pressure is considered the most important risk factor. However, glaucoma may occur even with normal readings. People with low blood pressure or general circulatory disturbances are particulary at risk. Glaucoma is significantly increased by taking medicines that contain cortisone or similar active constituents.