Relative afferent pupillary defect with normal vision and vertical strabismus—implications for pupillary pathway anatomy
| Autor: | Flemming Staubach, Wolf A. Lagrèze, Christina Pieh, Philip Maier |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
genetic structures
Visual Acuity Astrocytoma Ocular Motility Disorders Cellular and Molecular Neuroscience Pupil Disorders Optic Nerve Diseases parasitic diseases Afferent Pupillary Defect Humans Medicine Visual Pathways Child Strabismus Vertical strabismus Brain Neoplasms business.industry Nerve Compression Syndromes food and beverages Trochlear Nerve Diseases Anatomy bacterial infections and mycoses Magnetic Resonance Imaging eye diseases Sensory Systems Ophthalmology Pupillary reflex Female Visual Fields Normal vision Visual dysfunction business |
| Zdroj: | Graefe's Archive for Clinical and Experimental Ophthalmology. 245:321-323 |
| ISSN: | 1435-702X 0721-832X |
| DOI: | 10.1007/s00417-005-0235-9 |
| Popis: | A relative afferent pupillary defect (RAPD) is usually a sign of visual dysfunction. Here, an unusual case of an RAPD combined with vertical strabismus but normal vision is described. Implications for pupillary pathway anatomy are discussed.A 12-year-old girl with chronic headache was shown to have a midbrain tumour. She presented to us with intermittent diplopia. Examination included visual acuity, visual fields, pupillary function, anterior and posterior segments, and strabismus evaluation with the tangent screen.There was a right-sided pathologic RAPD but no afferent visual impairment. Isocoria was present in light and darkness. There was a right-sided strabismus sursoadductorius.A pathologic RAPD with normal vision can be caused by tumour compression of the contralateral pretectal nucleus or its afferent or efferent fibres. As an implication for pupillary pathway anatomy, our case suggests that there is equal distribution between crossing and non-crossing intercalated neurons. An associated strabismus can show a non-paralytic pattern. |
| Databáze: | OpenAIRE |
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