Glaucoma is a medical condition of the eye where the optic nerve becomes damaged, and worsens over time. The buildup of pressure inside the eye, known as intraocular pressure, is the eye's inability to drain out the aqueous humor fluid properly. The optic nerve damages can lead to loss of vision and permanent blindness within a couple of years if left untreated.
The two main types of the disease are open-angle glaucoma and angle-closure glaucoma. Open-angle glaucoma is the most common of the pair. In the open-angle, the eye structures appear normal, but the fluid doesn't flow properly through the drain of the eyes, known as the trabecular meshwork.
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