24 results
Mydriasis Causes - AAAS Mnemonic
 • Atropine
 • Anticholinergic Toxicity
 • Antidepressants (and Serotonin Syndrome)
 •
Mydriasis Causes ... Sympathomimetics #Mydriasis
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis ... Framework Causes of Mydriasis ... Dilated pupils (mydriasis ... • Unilateral Mydriasis ... • Bilateral Mydriasis
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
Synechiolysis - Slit Lamp Ocular Examination

Synechiolysis after pharmacological mydriasis in a patient with anterior uveitis.

Dr. Sebastian
pharmacological mydriasis
Argyll Robertson Pupil
Definition:
 - Irregular and small (1-2mm) pupil
 - Light-near dissociation (accommodation remains intact)
 -
response to: Dark, Mydriatics
Traumatic Iritis
Clinical 
• Photophobia (hallmark) 
• Decreased visual acuity 
• Painful 
Treatment 
• Steroids 
• Mydriatics
• Steroids • Mydriatics
Right Oculomotor (CNIII) Palsy on Physical Exam

Demonstrates right eyelid ptosis, paralyzed medial rectus and ipsilateral mydriasis.

Dr.
and ipsilateral mydriasis
Characteristics of Serotonin Syndrome and Other Hyperthermic Syndromes 
Serotonin Syndrome
 - SSRIs, second-generation antidepressants, MAOIs, linezolid,
sounds, diarrhea, mydriasis