Gunn sign
The Gunn sign (after Robert Marcus Gunn ; also: crossing phenomenon ) is a term used in ophthalmology . It describes a retinal damage caused by disorders in the blood circulation ( arteriosclerosis , high blood pressure etc.) with changes in the fundus , often in patients with retinopathia hypertonic or retinopathia diabetic . Small veins in the retina are compressed by intersecting arteries .
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literature
- Theodor Axenfeld (founder), Hans Pau (ed.): Textbook and atlas of ophthalmology. 12th, completely revised edition. With the collaboration of Rudolf Sachsenweger and others Gustav Fischer, Stuttgart and others 1980, ISBN 3-437-00255-4 .