Ocular hypertension is an abnormally increased intraocular pressure, which is the pressure inside the eyeball. Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 10-21 mm Hg. Ocular hypertension is when the intraocular pressure is higher than 21 mm Hg.
It is caused by an imbalance in the production and drainage of aqueous humor, which is the fluid inside the eyeball. The channels that normally drain the aqueous humor from inside the eye do not function properly. As more fluid is constantly being produced which cannot be drained, then ocular hypertension ensue.
Ocular hypertension is usually treated with pilocarpine, timolol, acetazolamide and clonidine. It is the main cause of glaucoma.
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