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Marcus-Gunn Pupil, MedPix™ : 271 - Medical Image Database and Atlas
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More Like This ? Marcus-Gunn Pupil
Topic 271 - Created: 1997-03-14 00:00:00-05 - Modified: 1997-03-17 00:00:00-05

The intensity of the input from one eye is different, so that the degree of pupillary constriction with a light shining in one pupil is less than when with the light shining in the other pupil. Common causes include optic neuritis (Multiple Sclerosis - MS), and retinal lesions. Lesions of the optic pathways that are distal to the lateral geniculate body will NOT produce an afferent pupillary defect.

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Submitted by: James George Smirniotopoulos, M.D. - Author Info
Affiliation: Uniformed Services University
Approved By: Not Approved
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