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Wednesday, October 12, 2016

Acute Angle Closure Glaucoma

An online community of practice for Canadian EM physicians
CanadiEM - By Stephanie Cargnelli - October 11, 2016
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..."Acute angle closure glaucoma is a condition characterized by raised intraocular pressure due to impaired outflow of aqueous humor from the posterior chamber of the eye. In a normal eye, the aqueous humor is produced in the posterior chamber by the ciliary process and proceeds to flow through the pupil to the anterior chamber and out through the trabecular meshwork into Schlemm’s canal. In acute angle closure glaucoma, the flow to the trabecular meshwork is blocked by contact between the lens and the iris resulting in accumulation of aqueous humor in the posterior chamber. This is referred to as “pupillary block.” As pressure in the posterior chamber rises, the iris is pushed further forward and causes the angle between the peripheral iris, trabecular meshwork, and cornea to close, hence the name acute angle closure glaucoma..."