relative afferent pupillary defect

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• defect — An imperfection, malformation, dysfunction, or absence; an attribute of quality, in contrast with deficiency, which is an attribute of quantity. [L. deficio, pp. fectus, to fail, to lack] aortic septal d., aorticopulmonary septal d. a small… …   Medical dictionary

• pupillary — Relating to the pupil. p. light near dissociation a stronger near pupil response than light response; due to weak pupillomotor input, Argyll Robertson pupil, dorsal midbrain syndrome, or to misdirection of …   Medical dictionary

• Marcus Gunn pupil — Classification and external resources The left optic nerve and the optic tracts. A Marcus Gunn pupil indicates an afferent defect, usually at the level of the retina or optic nerve. Moving a bright light from the unaffected eye to the affect …   Wikipedia

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• Vision loss — or visual loss is the absence of vision where it existed before, which can happen either acutely (i.e. abruptly) or chronically (i.e. over a long period of time). The effects of visual loss can, before the acquisition of alternative adaptations… …   Wikipedia

• Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… …   Medical dictionary

• Behçet's disease — Not to be confused with Becker disease. Behçet s disease Classification and external resources ICD 10 M35.2 ICD 9 136 …   Wikipedia

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• number — 1. A symbol expressive of a certain value or of a specific quantity determined by count. 2. The place of any unit in a series. atomic n. (Z) the n. of protons in the nucleus of an atom; it indicates the position of the …   Medical dictionary