Marcus Gunn pupil
the defect of pupillary movement seen in the Marcus Gunn pupillary phenomenon.

Medical dictionary. 2011.

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  • 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

  • Marcus Gunn phenomenon — For the pupillary defect, see Marcus Gunn pupil. Marcus Gunn phenomenon Classification and external resources Nerves of the orbit, and the ciliary ganglion. Side view. (Trigeminal nerve and oculomotor nerve both …   Wikipedia

  • Marcus Gunn pupillary phenomenon — with unilateral optic nerve or retinal disease, a difference between the pupillary reflexes of the two eyes when a light is shone alternately into each one with the other eye covered; on the affected side there is abnormally slight contraction or …   Medical dictionary

  • Robert Marcus Gunn — (1850, Dunnet – 29 November 1909, Hindhead) was a Scottish ophthalmologist remembered for Gunn s sign and the Marcus Gunn pupil. Contents 1 Biography 2 See Also 3 External links …   Wikipedia

  • pupila de Marcus Gunn — Eng. Marcus Gunn pupil Defecto pupilar aferente causado por una lesión en el nervio óptico que no es lo bastante severa como para causar una ausencia de percepción a la luz. Fenómeno pupilar de Marcus Gunn …   Diccionario de oftalmología

  • Gunn crossing sign dots pupil etc. — (gun) [Robert Marcus Gunn, British ophthalmologist, 1850–1909] see under dot, sign, and syndrome; see Marcus Gunn pupil, under pupil; and see Marcus Gunn pupillary phenomenon, under phenomenon …   Medical dictionary

  • Pupil — The pupil is the hole that is located in the center of the iris of the eye and that controls the amount of light that enters the eye.Cassin, B. and Solomon, S. Dictionary of Eye Terminology . Gainsville, Florida: Triad Publishing Company, 1990.]… …   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

  • Gunn — Robert Marcus, British ophthalmologist, 1850–1909. See G. phenomenon, G. dots, under dot, G. sign, G. syndrome, Marcus G. pupil …   Medical dictionary

  • Argyll Robertson pupil — Classification and external resources ICD 10 A52.1, H58.0 ICD 9 …   Wikipedia

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