Don's attack was caused by narrow angle glaucoma.

However, increased intraocular pressure is neither sufficient nor necessary for development of primary open angle glaucoma, although it is a major risk factor.

People of African descent are three times more likely to develop primary open angle glaucoma.

As of 2010, there were 44.7 million people in the world with open angle glaucoma.

The same year, there were 2.8 million people in the United States with open angle glaucoma.

Strabismus or primary open angle glaucoma was noted in some of the patients.

People with high myopia are more likely to have retinal detachments and primary open angle glaucoma.

Atropine is contraindicated in patients pre-disposed to narrow angle glaucoma.

A trepanotrabeculectomy is used in the treatment of chronic open and chronic closed angle glaucoma.

Primary open angle glaucoma is the most common type.