26 results
Argyll Robertson Pupil
Definition:
 - Irregular and small (1-2mm) pupil
 - Light-near dissociation (accommodation remains intact)
 -
Argyll Robertson ... response to: Dark, Mydriatics ... @neudrawlogy #Argyll
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis ... Dilated pupils (mydriasis ... • Unilateral Mydriasis ... • Bilateral Mydriasis ... CVA, Syphilis (Argyll
Mydriasis Causes - AAAS Mnemonic
 • Atropine
 • Anticholinergic Toxicity
 • Antidepressants (and Serotonin Syndrome)
 •
Mydriasis Causes ... Sympathomimetics #Mydriasis
Argyll-Robertson Pupil on Physical Exam
Small (myotic), irregular pupil that do not react to light but do
Argyll-Robertson ... Medicalknowled1 #Argyll
Pupillary Abnormalities  Overview
 - Unequal Pupils (anisocoria)
 - Tonic pupil (Adie's pupil)
 - OculomotorNerve (CN
light indicate Argyll
Serotonin Syndrome
 - Rapid onset 
 - Combination of 2+ serotonin agonists 
Mental status changes:
Diaphoresis - Mydriasis
Photophobia and Headache - Differential Diagnosis Framework

Why?
• The coexistence of photophobia and headache suggests the potential
Benign episodic mydriasis ... hemorrhage (SAH): - Mydriasis ... nerve pain - Mydriasis
Clinical Manifestations of Serotonin Syndrome
 • Ophthalmologic: Mydriasis, Ocular clonus (slow horizontal movements)
 • Gastrointestinal: Diarrhea,
Ophthalmologic: Mydriasis
Extraocular Muscle Actions & Clinical Testing
What about clinical testing of extraocular muscle function & associated nerve
CN Ill: ptosis, mydriasis
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Normal response to mydriatics