Atlas of Ophthalmology

Pre-ganglionic Horner’s syndrome (#2)

Pre-ganglionic Horner’s syndrome (#2)
After instillation of 10% cocaine into both eyes, the right pupil failed to dilate while the left pupil dilated to 7 mm. Failure of the smaller pupil to dilate in response to cocaine confirms the diagnosis of Horner’s syndrome. This patient’s Horner’s was due to a mediastinal neurilemmoma.
Pollock, Stephen C. , M.D., ¦1, Mebane NC, USA
Neuro-Ophthalmology -> Pupillary Abnormalities -> Neurogenic Disorders -> Horner's Syndrome -> Pre-ganglionic -> Case
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