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Kevin R. Kazacos, DVM, PhD; William A. Vestre, DVM, MS; Evelyn A. Kazacos, DVM, MS
West Lafayette, Ind

Lawrence A. Raymond, MD
Cincinnati

Arch Ophthalmol. 1984;102(7):967-968.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To the Editor.

—In a recent article in the ARCHIVES Gass and Braunstein¹ presented evidence that diffuse unilateral subacute neuroretinitis (DUSN) is caused by at least two different nematodes, neither of which is Toxocara canis. Unidentified intraocular nematodes in the size range 400 to 1,000 µm long were associated with the disease in 12 patients primarily from the southeastern United States, and nematodes 1,500 to 2,000 µm long were seen in six patients from the upper midwestern United States. The largest diameters of the worms were stated as approximately 1/20 their length, or about 20 to 50 µm and 75 to 100 µm, respectively.

Both size measurements, but especially those of the larger nematodes, match the size range of larvae of Baylisascaris sp, common intestinal roundworms of lower carnivores, including raccoons and skunks. In our opinion, Baylisascaris larvae, especially Baylisascaris procyonis from raccoons, are a probable cause of many . . . [Full Text PDF of this Article]

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