Here is a Chihuahua patient with pharmacologically confirmed partial Horner syndrome of the right eye (ie miosis mild ptosis). This patient presented with a history of having a small than normal right eye. This was an illusion given the ptosis. Horner syndrome results from anywhere along the sympathetic nervous system pathway to the eye. Complete Horner syndrome, in the dog, is characterized by ptosis, enophthalmos, miosis, and protrusion of the third eyelid. Pharmacological testing confirms the diagnosis. CullenWebb recommends that all patients with unexplained changes in pupil size or changes in the appearance to the eye be referred to a board-certified veterinary ophthalmologist. Such an examination will permit an expert evaluation of the condition that will aid in arriving at an accurate diagnosis, and permit a comprehensive discussion regarding further diagnostic workup and prognoses, as was done for this patient. To arrange an appointment either contact us at 1-506-204-8433 or request referral by your family veterinarian. #cullenwebb #hornerssyndrome #hornersyndrome #sympathetic #animaleyedoctor #veterinaryophthalmology #specialist #veteribary #dogsofinstagram #dogs #eye https://www.instagram.com/p/ByjVSFolLxY/?igshid=1h0kkn92upkv1















