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Sunday, October, 25, 2009

Closed Circulatory System

Health Encyclopedia: Glaucoma Introduction

Introduction


Glaucoma is defined as a disease of the optic nerve, in which the nerve cells in the front of the optic nerve (the ganglion cells) die. The process is irreversible. Previously, it was believed that glaucoma was almost always due to increased intraocular pressure. However, glaucoma has been observed in many patients with normal and even low eye pressure, so the definition now rests on the damage to the optic nerve.

The Aqueous Humor. In understanding of glaucoma, it is important to fir...

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