Eye pressure is known as intraocular pressure (IOP). That is a measure of the pressure inside your eyeball. Find out more about high intraocular pressure
Glossary of Eye and Vision Terms
Common terms to help you learn more about your eyes and vision
Farsightedness
Also called hyperopia; a refractive error in which the focal point for light rays is behind the retina; distant objects are seen more clearly than near objects. Find out more
Fovea
A tiny spot located in the macula that is the area of clearest vision on the retina.
Hereditary
Appearing in, or characteristic of, successive generations; individual differences in human beings passed from parent to offspring.
Incidence
Number of new cases of a particular problem or disease that occurs within a period of time.
Iris
Colored circular membrane that is in front of the lens and controls the size of the opening at its center (pupil), thereby regulating the amount of light entering the eye.
keratitis acanthamoeba
Acanthamoeba keratitis is sometimes referred to incorrectly as “keratitis acanthamoeba.” Find out more about acanthamoeba keratitis
Laser
Surgical tool using an intense beam of light energy to close rips, make holes, destroy new vessels (photocoagulation), or to open channels as in the treatment of glaucoma.
Legal Blindness
Visual acuity that does not exceed 20/200 in the better eye with correcting lens; field of vision no greater than 20 degrees in its widest angle (Visual acuity of 20/200
Lens
The transparent disc in the middle of the eye behind the pupil that brings rays of light into focus on the retina.