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By Lancaster Course in Ophthalmology
1980 - Uploaded on Feb 26, 2019.
- Last modified by Caroline Bozell on Mar 7, 2019.
- Rating
- Appears in
- Unit 09 Pathology of the Retina
- Condition/keywords
- retinal arterial macroaneurysm, retinal exudates
- Description
- Retinal arterial macroaneurysm. A ring of retinal exudate partially surrounds the macroaneurysm (upper left), which is more clearly delineated by fluorescein (upper right). The retinal arteriole is greatly dilated, and the stain for elastic tissue shows a localized area of disruption and loss of the internal elastic membrane (arrow). The surrounding retina is thickened by edema and some hemorrhage. The ectatic area of the vessel wall is greatly thickened by the accumulation of a laminated fibrinous material. (Courtesy of Alan Friedman, M.D.)