What is Glaucoma?

Glaucoma is a group of eye diseases that damage the optic nerve. Damage to the optic nerve is usually a result of increased intraocular pressure (IOP). Increased eye pressure develops when the fluids in the eye improperly drain. Over time, an increase in IOP may damages the optic nerve and cause vision loss and blindness.


Glaucoma is often referred to as the “sneak thief of sight” because it produces no symptoms until later stages. Glaucoma is diagnosed through regular, routine eye examinations, which can help to catch glaucoma before it progresses.

Visual loss from glaucoma is irreversible.  This is why early detection and treatment is very important: they allow measures to prevent progression and preserve remaining vision or slow down the progression of vision loss.

Most Common Types

Acute Closed-Angle Glaucoma

Closed-angle glaucoma occurs when the iris prevents proper intraocular fluid draining. This may result in an acute glaucoma attack when eye pressure may increase rapidly, producing severe headache, eye pain, nausea, and halos and result in significant vision loss in hours.