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corneal pannus

 

Definition: fibrovascular connective tissue that proliferates in the anterior layers of the peripheral cornea in inflammatory corneal disease, particularly trachoma in which the pannus involves the superior cornea. Three forms occur: pannus crassus (thick), in which there are many blood vessels and the opacity is very dense; pannus siccus (dry), pannus with dry, glossy surface; and pannus tenuis (thin), in which there are few blood vessels and the opacity is slight.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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