21 results
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
(Trochlear) Nerve ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential ... #diagnosis #ocular
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
with a left 6th nerve ... palsy Caused ... retraction #nystagmus #ocular ... clinical #video #neurology ... #ophthalmology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
, T1 (median) Reflexes ... to the radial nerve ... Carpal Tunnel Syndrome ... axillary nerve ... Myotomes #diagnosis #neurology
Approach to an Eye Exam

1. History
2. Obvious Physical Trauma
3. Initial Assessment
  A. Visual Acuity
Pupils a. ... Light Reflex, Accommodation ... (CN 3, 4, 6) ... Optic Nerve / Disc ... EyeExamination #Approach #Ophthalmology
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Adie's Pupil What ... Diagnosis: • CN ... dissociation • Other causes ... #PhysicalExam #neurology ... #ophthalmology
Marcus Gunn Pupil - Relative Afferent Pupillary Defect (RAPD)
Definition: Afferent loop of the pupillary light reflex
Marcus Gunn Pupil ... pupillary light reflex ... ) Where: Optic nerve ... * (main cause), ... #Defect #RAPD #neurology
Marcus-Gunn Pupil - Pupillary dilation in response to light on the left eye and a preserved
Marcus-Gunn Pupil ... #Marcus #Gunn #Pupil ... #Pupillary #reflex ... clinical #video #ocular ... #neurology #ophthalmology
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Neurologic ... a mass as the cause ... large/unreactive pupil ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Orbital Apex Syndrome secondary to Herpes Zoster Ophthalmicus (HZO)

This 81 yo male was referred to our
a non-reactive pupil ... acetate to help with ocular ... fissure and optic canal ... clinical #video #ophthalmology ... #physicalexam #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... Commonly caused ... damage to peroneal nerve ... Narrowing of spinal canal ... Myotomes #diagnosis #neurology