Color Atlas of Veterinary Ophthalmology by Gelatt Kirk N.; Plummer Caryn E.; & Caryn E. Plummer

Author:Gelatt, Kirk N.; Plummer, Caryn E.; & Caryn E. Plummer
Language: eng
Format: epub
Publisher: John Wiley & Sons, Incorporated
Published: 2017-03-20T00:00:00+00:00

Anterior Uveitis and Heartworm (Dirofilaria immitis)

The immature (fourth stage) larvae of Dirofilaria immitis is the most frequent intraocular parasite in the dog in North America (Figure 10.9; see also Figure 18.18). However, since long‐term prophylactic therapy for heartworm is common, this parasite is now an infrequent cause for anterior uveitis. The history is usually an outside dog, not on heartworm preventative, and an unilateral “red” eye.

Figure 10.9 Heartworm (Dirofilaria immitis) in the anterior chamber of a dog. The parasite appears as a mobile translucent worm. Note the marked iridocyclitis including hyperemia of the conjunctiva, ciliary flush, nictitans protrusion, and corneal edema and vascularization.

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