A condition in which the ocular image of an object as seen by one eye differs in size and shape from that seen by the other.

A series of tests used to assess various functions of the eyes.

Pieces of glass or other transparent materials used for magnification or increased visual acuity.

A membrane on the vitreal surface of the retina resulting from the proliferation of one or more of three retinal elements: (1) fibrous astrocytes; (2) fibrocytes; and (3) retinal pigment epithelial cells. Localized epiretinal membranes may occur at the posterior pole of the eye without clinical signs or may cause marked loss of vision as a result of covering, distorting, or detaching the fovea centralis. Epiretinal membranes may cause vascular leakage and secondary retinal edema. In younger individuals some membranes appear to be developmental in origin and occur in otherwise normal eyes. The majority occur in association with retinal holes, ocular concussions, retinal inflammation, or after ocular surgery. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p291)

Processes and properties of the EYE as a whole or of any of its parts.

Application of computer programs designed to assist the physician in solving a diagnostic problem.

The blending of separate images seen by each eye into one composite image.

Artificial implanted lenses.

Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.

Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)

The act of knowing or the recognition of a distance by recollective thought, or by means of a sensory process which is under the influence of set and of prior experience.

The sensory interpretation of the dimensions of objects.

A condition of an inequality of refractive power of the two eyes.