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How to Detect Glaucoma

The only way you can be sure to correctly detect glaucoma is with an eye exam performed by an eye doctor. A screening that only checks eye pressure isn’t usually enough to find glaucoma. In order to have a comprehensive eye exam to detect glaucoma, there are five different tests to perform.

Tonometry

This measures the pressure in the eye. During this test, eye drops are used to test the eye and a tonometer measures the pressure using a warm puff of air. Most glaucoma cases will be diagnosed if the measured eye pressure exceeds 20 mm Hg, but eye pressure is unique to every person and cases of glaucoma can still be diagnosed if the pressure is lower than this.

Ophthalmoscopy

During this procedure, your eye doctor will look at your optic nerve to check for any optic nerve damage. The pupil is dilated so the doctor is able to take a closer look at the color and shape of the nerve. A light will also be used to magnify your optic nerve.

Perimetry

This visual test helps produce a map of your field of vision in order to determine if your vision has already been affected by glaucoma. During the test, you will look at a light spot straight ahead and present it in different areas of your vision to help draw the map. When glaucoma is detected, this test is done twice a year in order to see changes in vision.

Gonioscopy

This exam determines whether the angle where the cornea meets the iris is narrow or wide. If the angle is blocked, this could be a sign of angle closure acute glaucoma.

Pachymetry

This test measures the thickness of the cornea, since the thickness of a person’s cornea can influence eye pressure readings.

Visit Our Eye Doctor in Fayetteville

There are multiple tests for glaucoma because it’s not an easy condition to diagnose. It’s important for there to be a careful evaluation of your optic nerve. The best way to preserve your vision is with regular visits to your eye doctor. Contact us at Cape Fear Eye Associates PA to schedule your appointment today.

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