Saturday, November 24, 2012


A dermoid is a choristoma, wich is a congenital mass of tissue in na abnormal position. Dermoids usually occur at the temporal limbal área, and they generally extend onto the sclera and the cornea. These lesions contain keratinied epithelium, hair, blood vessels, fibrous tissue, fat, nerves, glands, smooth muscle, and even cartilage. Dermoids are presente at birth but may not be recognized clinically until the animal is several weeks old. Dermoids are removed by superficial keratectomy and removal of the adjacente, affected conjunctiva.

Essentials of Veterinary Ophthalmology, Kirk Gellat, 2000