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

• 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

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

• 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

• Optic neuropathy — Classification and external resources ICD 10 H46 The optic nerve contains axons of nerve cells that emerge from the retina, leave the eye at the optic disc, and go to the visual cortex where input from the eye is processed into vision. There are… …   Wikipedia

• Swinging-flashlight test — The swinging flashlight test is used to help a practitioner decide whether reduced vision is due to ocular disease. ProcessFor an adequate test, vision must not be entirely lost. In dim room light, note the size of the pupils. After asking the… …   Wikipedia

• 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

• Anisocoria — Infobox Disease Name = PAGENAME Caption = Anisocoria DiseasesDB = 724 ICD10 = ICD10|H|57|0|h|55 ICD9 = ICD9|379.41 ICDO = OMIM = 106240 MedlinePlus = eMedicineSubj = emerg eMedicineTopic = 29 eMedicine mult = eMedicine2|neuro|479… …   Wikipedia

• Sign — Any abnormality that indicates a disease process, such as a change in appearance, sensation, or function, that is observed by a physician when evaluating a patient. * * * 1. Any abnormality indicative of disease, discoverable on examination of… …   Medical dictionary