16 results
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
Convergence Retraction Nystagmus ... nerve palsy Caused ... #ocular #physicalexam ... clinical #video #neurology ... #ophthalmology
Seesaw Nystagmus 

Sawtooth or seesaw nystagmus is an unusual but characteristic type of nystagmus. Typically there
interstitial nucleus of Cajal ... vertical vestibulo-ocular ... We have varied causes ... such as trauma, stroke ... clinical #video #ophthalmology
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
minutes to days • Nystagmus ... with vascular causes ... • Nystagmus: ... positional episodes caused ... Vertigo #Algorithm #differential
Ocular Nystagmus in PSC BPPV after Dix Hallpike Maneuver

This is a case of posterior semicircular canal
Ocular Nystagmus ... Maneuver This is a case ... posterior semicircular canal ... #physicalexam #ophthalmology ... #neurology
Ocular Nystagmus in PSC BPPV after Dix Hallpike Maneuver

This is a case of right posterior semicircular
Ocular Nystagmus ... Maneuver This is a case ... posterior semicircular canal ... #physicalexam #ophthalmology ... #neurology #Frenzel
Vision Loss - Differential Diagnosis
Chronic: 
  - Cornea: Scarring, Edema
  - Lens: Cataracts
Vision Loss - Differential ... Cataracts - Macula: Macular ... Hemorrhage, TIA, Stroke ... #Diagnosis #causes ... #ophthalmology
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
vestibular neuritis • Nystagmus ... can be severe in stroke ... with vascular causes ... circulation TIA • Nystagmus ... symptoms #comparison #neurology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential ... #diagnosis #ocular
Seesaw nystagmus 
-> eye move in an opposed vertical fashion (one goes up while the other
Seesaw nystagmus ... commonly parasellar masses ... disease, brainstem stroke ... #ophthalmology ... clinical #video #eye #ocular
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Hearing Loss - Differential ... include a: • Neurologic ... Diabetes mellitus • Stroke ... acoustic neuroma) and stroke ... cause unknown)