32 results
CN III Palsy - Oculomotor Nerve
 • Ptosis: Loss of innervation of the levator palpebrae superior.
CN III Palsy - Oculomotor ... oblique • Dilated Pupil ... innervation to pupil ... #Palsy #Oculomotor ... #Nerve #Cranial
Anisocoria Evaluation Flow Chart - Differential Diagnosis
1. Check pupillary reaction to light 
2. Measure pupil size.
Evaluation Flow Chart - Differential ... Measure pupil size ... Anisocoria - CN ... III Palsy - Pharmacologic ... Evaluation #Algorithm #Differential
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Fixed Dilated Pupil ... - Differential ... Oculomotor (3rd cranial ... nerve) Palsy: ... no neurological cause
Causes of Facial Weakness - Differential Diagnosis Algorithm
Forehead Sparing = Central cause
  - Most commonly
Causes of Facial ... Weakness - Differential ... nerve palsy) ... Unilateral: Bell's Palsy ... #Weakness #Differential
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • CN VI palsy ... Ill palsy ... a mass as the cause ... large/unreactive pupil
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Adie's Pupil What ... Young females Differential ... Diagnosis: • CN ... Ill Palsy - ... dissociation • Other causes
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
) Nerve palsy ... ) Nerve palsy • ... Medial Longitudinal ... Skew Deviation Casey ... ophthalmology #neurology #differential
Bell's Palsy
Bell’s Palsy is a damage, acute weakness, or paralysis of the Facial nerve (7th CN),
paralysis of the Facial ... nerve (7th CN), ... an identifiable cause ... when the facial ... The cause is unknown
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis - Differential ... Diagnosis Framework Causes ... Unilateral Mydriasis: CN ... Hypothermia Causes ... Mydriasis #Miosis #differential
Anisocoria - Pupillary Defects - Differential Diagnosis Algorithm

Physiological - Simple Anisocoria ( <O.5mm)
 - Anisocoria equal
Pupillary Defects - Differential ... - 10% cocaine: pupils ... Fascicle (Other CN ... #Defects #Differential ... Diagnosis #Algorithm #Causes