Progressive and irreversible destruction of the optic nerve.
It is an asymptomatic disease, the only sign being alteration of visual field, which often can not be seen by the patient.
Headaches and discomfort in the eye occur when the nerve is severely damaged.
Visual disturbances also appear in an advanced stage of the disease.
Regular ophthalmologic examinations for those aged over 45, especially those who have family history of glaucoma
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