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Leonard Apt, MD
Los Angeles, Calif

Arch Ophthalmol. 1995;113(4):403.

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

In the May 1994 issue of the ARCHIVES, Flach and Donahue¹ reported a case of transient anisocoria in a woman who had rubbed her eye after touching her cat's flea and tick collar. The collar contained an anticholinesterase pesticide. Apparently the authors were unaware that Ellenberg et al² had previously reported a similar experience. Flach and Donahue cited no prior report on the subject.

The patient of Ellenberg et al was a 36-year-old woman who was seen in the emergency department for the complaint of unequal pupils. Questioning revealed that she had put a contact lens into her left eye only soon after changing her dog's flea collar. The left pupil became "tiny." Her pet's collar contained an anticholinesterase carbamate drug. The anisocoria was transient.

Awareness by the clinician of the connection between handling a pet's flea collar and pupillary disturbances (miosis, anisocoria) may spare a patient's fearful . . . [Full Text PDF of this Article]

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