It’s a condition on eyes characterized by gradual loss of eyesight. Glaucoma occurs because of the high pressure in eyes cause damage the optic nerve, namely the nerves that transmit the shadow falls on retina to the brain.
Because of damaging optic nerve, there is a blind spot, at first occurs in the peripheral visual field. There are two types of glaucoma : open-angle glaucoma and angle-closure glaucoma. The most of types is chronic open-angle glaucoma.
There is unknown glaucoma, low tension glaucoma. In this type pressure of eye is within normal limits but optic nerve damage if it’s not had therapy, glaucoma can cause blindness in both eyes.
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