depression of optic disk
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Optic disc — Interior of posterior half of bulb of left eye. The veins are darker in appearance than the arteries … Wikipedia
depression — 1. Reduction of the level of functioning. 2. SYN: excavation (1). 3. Displacement of a part downward or inward. 4. A temporary mental state or chronic mental disorder characterized by feelings of sadness, loneliness, despair, low self esteem, and … Medical dictionary
Optic disc pit — An optic disc pit is a congenital excavation (or regional depression) of the optic nerve head resulting from a malformation during development of the eye. Optic pits are important because they are associated with posterior vitreous detachments… … Wikipedia
disk — 1. A round, flat plate; any approximately flat circular structure. 2. SYN: lamella (2). 3. In dentistry, a circular piece of thin paper or other material, coated with an abrasive substance, used for cutting and polishing tee … Medical dictionary
excavation — 1. A natural cavity, pouch, or recess; a sunken or depressed area. SYN: depression (2) [TA], excavatio. 2. A cavity formed artificially or as the result of a pathologic process. atrophic e. an exaggeration of the … Medical dictionary
excavatio disci — [TA] depression of optic disk: the depression situated in the center of the optic disk; called also optic or physiologic cup and excavation of optic disk … Medical dictionary
cup — 1. An excavated or hallowed structure, either anatomic or pathologic. SYN: poculum. 2. SYN: cupping glass. [A.S. cuppe] Diogenes c. SYN: c. of palm. dry c. a cupping glass formerly applied to the unbroken skin to draw blood to the … Medical dictionary
excavatio — SYN: excavation (1). [L. fr. ex cavo, pp. cavatus, to hollow out, fr. ex, out, + cavus, hollow] e. disci [TA] SYN: depression of optic disk. e. papillae SYN: depression of optic disk. e. rectouterina [TA] SYN: rectouterine pouch. e.… … Medical dictionary
pathologic cupping — depression of the optic disk due to disease … Medical dictionary
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
