Glaucoma is normally excessive pressure interior the eye that damages the optic nerve and might result in everlasting imaginative and prescient loss. Everyday-anxiety glaucoma (also called low-tension glaucoma) is a unique condition wherein optic nerve damage and imaginative and prescient loss have came about no matter a everyday pressure inner the attention.
Eye pressure, called intraocular strain (iop), is measured in millimeters of mercury (mm hg). Everyday eye strain degrees from 10-21 mm hg. The general public with glaucoma have iop of extra than 21 mm hg; however, in normal-tension glaucoma, people have iop in the regular variety.
Through definition, human beings with everyday-tension glaucoma have open, regular-performing angles. In truth, the functions of regular-anxiety glaucoma are similar to primary open-perspective glaucoma (poag), the maximum common shape of glaucoma (see primary open-attitude glaucoma).
Despite the fact that the prevalence of normal-tension glaucoma varies international, it's far very generic in japan.
Within the usa, up to 15-25% of human beings with open-angle glaucoma enjoy everyday-tension glaucoma.
Consistent with the baltimore eye look at, 50% of individuals with changes of their optic disc (the front floor of the optic nerve) and of their field of regard had an iop of less than 21 mm hg on a single go to, and 33% had an iop of less than 21 mm hg on 2 measurements.
Everyday-tension glaucoma is more commonplace in ladies than in guys.
Normal-anxiety glaucoma influences adults, with an average age of 60 years.
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