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as we all know, glaucoma has become the world's first irreversible killer of vision due to its insidiousness and blindness. it is one of the three major blindness diseases that cause human blindness. most people only know about glaucoma but not about open-angle glaucoma. especially in recent years, open-angle glaucoma has become the main type of glaucoma. most patients with primary open-angle glaucoma have no obvious symptoms in the early stage, and are only discovered in the late stage when vision loss, visual field shrinkage, and dark vision occur. some patients may not discover that they are in an advanced stage until a physical examination.

expert science popularization

today, wang ying, deputy director of the glaucoma department of nanning aier eye hospital, is here to talk to you about this hidden vision "killer" - open-angle glaucoma.

1. what is open-angle glaucoma?

open-angle glaucoma is one of the common types of glaucoma. unlike angle-closure glaucoma, patients with open-angle glaucoma have open angles. in layman's terms, human eyes are constantly secreting "aqueous humor", and the "aqueous humor" must be drained out through a structure called the "anterior chamber angle." the "anterior chamber angle" is like the drainage outlet of the eye. angle-closure glaucoma is caused by the drainage outlet being too narrow and acutely closed; while open-angle glaucoma is caused by a problem with the filter of the drainage outlet. the filtration performance is poor, the aqueous humor cannot be drained out, and the pressure on the eyeball increases, causing optic nerve damage.