Closed Angle Glaucoma

Narrow angle glaucoma; less common type of glaucoma in which the trabecular meshwork (the “drainage” channel in the irido-corneal angle through which aqueous fluid leaves the eye) is compromised due to the iris’ being moved forward and narrowing or blocking the irido-corneal and/or compressing the trabecular meshwork, preventing fluid from leaving the eye at a normal rate, increasing intraocular pressure, and damaging or destroying ganglion cells and axons in the retina and optic nerve; can cause intraocular pressures of 60 mm Hg or more, as well as severe eye pain, nausea, vomiting, redness, blurred vision with halos or rainbows around lights, and sudden loss of vision.