The blending of slightly dissimilar images from the two eyes for the perception of three–dimensional depth.
Glossary of Eye and Vision Terms
Common terms to help you learn more about your eyes and vision
Detached Retina
Vitreous fluid, the gel-like material that fills the eyeball, is attached to the retina around the back of the eye. If the vitreous changes shape, it may pull away a
Diabetic Retinopathy
Diabetic Retinopathy or Diabetes-related retinopathy occurs when small blood vessels leak and bleed in the retina. The retina is layer of the eye that acts like the film in the
Diopter
Metric unit used to denote the refractive error of the eye or lens.
Distance Vision
Ability to distinctly perceive objects at a distance, usually tested at 20 feet.
Eclipse Glasses
To view a solar eclipse safely and without damaging your eyes, solar eclipse glasses can help. Make sure they meet safety requirements and are manufactured with the ISO 12312-2 standard.
Eye Pressure
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
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.
