Glaucoma FAQs (cont.)
IN THIS ARTICLE
If Eye Pressure Is High, Does That Mean a Person Has Glaucoma?
Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 10 to 21 mm Hg. When a person's pressure is higher than 21 mm Hg, they are at an increased risk for developing glaucoma.
Some people can tolerate pressures slightly higher than normal without developing glaucoma. This is called ocular hypertension. If an ophthalmologist (a medical doctor who specializes in eye care and surgery) diagnoses ocular hypertension, it does not mean that a person has glaucoma, but it does mean that they are at a higher risk for developing the condition and they should be examined routinely to ensure no permanent optic nerve damage and vision loss occur.
On the other hand, some people with normal pressures can still go on to develop optic nerve damage and to lose vision. This is called normal (or low) tension glaucoma.
Medically Reviewed by a Doctor on 3/16/2015
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