Glaucoma

Paper Summary:

This paper explains that glaucoma is a group of eye diseases that gradually steals sight without warning and often without symptoms; vision loss is caused by damage to the optic nerve because the eye's drainage canals become clogged over time and the inner eye pressure (also called intra-ocular pressure or IOP) rises because the correct amount of fluid can't drain out of the eye. The author describes several types of glaucoma: Open angle, angle closure, secondary, normal tension (also known as low tension or normal pressure glaucoma) and pigmentary. The paper stresses that early detection, through regular and complete eye exams, including two routine eye tests tonometry and ophthalmoscopy, is the key to protecting vision from damage caused by glaucoma.

From the Paper:

"Angle closure Glaucoma is rarer and is very different from open angle glaucoma. In this case, the eye pressure usually goes up very fast. This happens when the drainage canals get blocked or covered over, like clog in a sink when something is covering the drain. With angle closure glaucoma, the iris and cornea is not as wide and open as it should be. The outer edge of the iris bunches up over the drainage canals, when the pupil enlarges too much or too quickly. This can happen when entering a dark room."

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