Merck Manual

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Horner syndrome, llama
horners-syndrome-llama-johnson-sized
Horner syndrome, llama

    Photograph of a llama with Horner syndrome. Classic clinical signs are ptosis (ie, drooping of the upper eyelid and narrowing of the palpebral fissure), enophthalmos, elevation of the third eyelid, and miosis.

Courtesy of Dr. LaRue Johnson.