High Pressure in the Eyes
The higher the pressure in the eye, the greater the chance of damage to the optic nerve. But some people who have higher-than-normal pressure in their eyes do not develop glaucoma.
Normal intraocular pressures range from about 10 millimeters of mercury (mm Hg) to about 21 mm Hg.
It's important for adults to have eye exams on a regular basis to check for problems. Regular eye exams are critical for detecting: Glaucoma Age-related macular degeneration (AMD) Cataracts Diabetic retinopathy But everyone needs regular eye exams. This is particularly important if you have risk factors or a family history of eye problems. Children need their vision checked at 6 months, 3 years, and before first grade. Adults should see an eye doctor at least every two years and...
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- Many people who have intraocular pressures consistently above 27 mm Hg develop optic nerve damage unless the pressure is lowered by medication.
- Some people have intraocular pressures consistently higher than 21 mm Hg but do not develop optic nerve damage. This condition is called ocular hypertension.
Some people who have optic nerve damage from glaucoma have normal intraocular pressures. This condition is called normal or low-tension glaucoma. But what is normal for one person may not be normal for another person.
Doctors also measure the thickness of the clear front surface of the eye (cornea). Cornea thickness, along with pressure inside the eye, helps determine your risk for glaucoma.
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