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Narrow Angle Glaucoma

Narrow-angle glaucoma occurs when the colored portion of your eye (iris) is pushed or pulled forward causing blockage of the drainage angle of the eye, where the trabecular meshwork allows outflow of fluids causing a rise in intraocular pressure. 

Narrow angle Glaucoma

Symptoms

Narrow angle glaucoma is generally a chronic and asymptomatic disease, but rarely presents acutely leading to what is known as Acute angle-closure glaucoma.  Leading to such symptoms as eye pain, headaches, halos around lights, dilated pupils, vision loss, red eyes, nausea, and vomiting.  This is a medical emergency and if high eye pressure is not reduced within hours, it can cause permanent vision loss. Anyone who experiences these symptoms should contact an ophthalmologist immediately or go to a hospital emergency room.

Risk Factors

What risk factors to developing narrow angle glaucoma?  Risk factors include older age, Asians, and female sex predisposing.  

  • Age. As we age, our ocular lens (that sits behind the pupil) grows larger increasing the risk for the iris to block the flow of fluid called pupillary block.
  • Race. Asians, as well as Inuit-Americas and other northern indigenous people have anatomically narrower anterior chamber leading to a have a higher incidence of angle-closure glaucoma.
  • Sex. Among Caucasians, females three times more likely than in men to develop narrow angles secondary anatomically narrower chambers.

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