9 results
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Movement Disorders • CN ... Palsy • CN IV ... palsy • CN VI ... #neurology #differential ... #diagnosis #ocular
Approach to an Eye Exam

1. History
2. Obvious Physical Trauma
3. Initial Assessment
  A. Visual Acuity
Ocular Movements ... (CN 3, 4, 6) ... Optic Nerve / Disc ... EyeExamination #Approach #Ophthalmology ... #PhysicalExam
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... Diagnosis Algorithm ... • CN VI palsy ... for ptosis with CN ... #Causes #Ophthalmology
Left Abducens Spasm on Physical Exam

A 50 yr male with left facial spasm and diplopia, with
Left Abducens Spasm ... with left facial spasm ... #CNVI #CN6 #PhysicalExam ... #clinical #ocular ... #ophthalmology
Anisocoria - Pupillary Defects - Differential Diagnosis Algorithm

Physiological - Simple Anisocoria ( <O.5mm)
 - Anisocoria equal
Pupillary Defects - Differential ... Diagnosis Algorithm ... • Oculomotor Nerve ... Fascicle (Other CN ... #Causes #Ophthalmology
Strabismus - Ocular Misalignment - Differential Diagnosis Algorithm
Phoria:
 • Latent deviation
 • Symmetrical corneal light reflex,
Strabismus - Ocular ... exotropia): • CN ... hypotopia, mixed): • CN ... unreactive pupil) • CN ... #Causes #Ophthalmology
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Ptosis - Differential ... CN III palsy 2. ... junction, cranial nerve ... eyelid: • Third nerve ... #Diagnosis #ophthalmology
Cover - Uncover Test Revealing CNVI Palsy

Here the Cover-Uncover test unmasks subtle right CN VI palsy.
unmasks subtle right CN ... a subtle right CN ... #CNVI #Palsy #CN6 ... #Abducens #Nerve ... #ocular #physicalexam
Photophobia and Headache - Differential Diagnosis Framework

Why?
• The coexistence of photophobia and headache suggests the potential
and Headache - Differential ... glaucoma - Ocular ... Trochlear headache • CNS ... the trigeminal nerve ... #diagnosis #ophthalmology