Glaucoma

Glaucoma is a disease that causes damage to the eye. If a person who has glaucoma does not get help from a doctor, they will not be able to see.

This disease happens because of increased pressure in the eye. The pressure causes damage to the optic nerve. This can cause loss of vision, and may also be painful.

Sometimes, it is hard for a person to know that they have glaucoma. The vision can be lost very slowly. When sight is lost from glaucoma, it cannot be recovered.

There are two kinds of glaucoma, the kind that happens very fast, and the kind that happens slowly, over a long time.

Glaucoma is the second most common cause of blindness in the world.