A condition where the pressure in the eye (intraocular pressure) is above average. The normal intraocular pressure is within ten (10) and 21 millimeters of mercury (mm Hg). The anomaly relates to intraocular pressure above 21 millimeters of mercury, without visual field loss or optic nerve damage. It most commonly occurs in people with family histories of glaucoma and ocular hypertension. It is also common in people with diabetes, the very nearsighted, or individuals above 40 years.