Contact Us
Find A Doctor

Open-Angle Glaucoma

open angle office visit

Open-angle glaucoma is the most common form of the disease, accounting for about 90 percent of all glaucoma cases, according to the Glaucoma Research Foundation. Here is a breakdown of the different types of open-angle glaucoma:

Primary open-angle glaucoma (POAG) occurs when the eye’s drainage meshwork becomes clogged over time.  As a result, fluid builds up and pressure inside the eye rises to a level that damages the optic nerve. POAG usually has no symptoms or warning signs. It develops slowly and visual loss may not be noticeable for years.

Secondary open-angle glaucoma develops as the result of other medical or ophthalmic conditions and can occur in one or both eyes. These secondary conditions may include high blood pressure, poorly controlled diabetes, traumatic eye injury, certain drugs like steroids, an advanced case of cataracts, and uveitis.

Secondary forms of open-angle glaucoma include:

  • Uveitic glaucoma—Because uveitis causes swelling of the middle layer of the eye (the uvea), it can raise intraocular pressure when those inflammatory cells clog the eye’s drainage canals and prevent fluid outflow. Elevated pressure may also result from the corticosteroids that ophthalmologists typically use to treat uveitis.
  • Pseudoexfoliative glaucoma—This form of glaucoma is triggered by a flaky material that peels off the outer layer of the lens and accumulates in the meshwork of the eye. This buildup of protein in the drainage system impedes normal drainage of fluids and causes eye pressure to rise. Patients with this aggressive disorder may experience more episodes of high pressure and more fluctuations in pressure than people with other types of glaucoma.
  • Pigmentary glaucoma – This form occurs when pigment granules from the back surface of the iris (the colored part of the eye) dislodge and clog the eye’s drainage canal, causing eye pressure to rise.
  • Neovascular glaucoma—Most often associated with diabetes, this form of glaucoma is the result of new blood vessels forming on the iris and over the eye’s drainage channels (the trabecular meshwork). This abnormality blocks fluids from leaving the eye, which causes intraocular pressure to rise.

Normal-tension glaucoma (also known as low-tension glaucoma) occurs when the optic nerve is damaged despite the fact eye pressure is within the statistically normal range (12-22 mm Hg). Risk factors include a family history of the disease, a history of systemic heart disease like irregular heart rhythm, low blood pressure, and Japanese ancestry.

Juvenile open-angle glaucoma is a form of primary open-angle glaucoma with an onset between 10 and 30 years of age. This is a rare and genetically predisposed form of glaucoma for which moderate to extreme nearsightedness is often an underlying factor. 

Contact Us

Eye Faculty PracticeTel: 212-979-4500

Address310 E. 14th Street
South Building, 3rd Floor
New York, NY 10003

Eye ClinicTel: 212-979-4192

Address310 E. 14th Street
South Building, 1st Floor
New York, NY 10003

Tribeca OfficeTel: 212-966-3901

Address77 Worth StreetNew York, NY 10013

Columbus CircleTel: 212-957-6933

Address200 West 57th Street, Suite 1410New York, NY 10019

Upper East SideTel: 212-731-3355

Address234 East 85th StreetNew York, NY 10028

Ophthalmology FPATel: 212-241-0939

Address17 East 102nd StreetNew York, NY 10029

Midwood OfficeTel: 718-375-6933

Address1630 East 15th Street
Second Floor (Suite 203)
Brooklyn, NY 11229

Williamsburg OfficeTel: 718-384-6933

Address101 Broadway, Suite 201Brooklyn, NY 11249

Mineola OfficeTel: 516-408-4900

Address200 Old Country Road
Suite 125
Mineola, NY 11501

Westchester OfficeTel: 914-934-5280

Address90 S Ridge StreetRye Brook, NY 10573

View all locations

Find a Doctor

by Specialty by Name
Request a Referral