19 results
Convergence-Retraction Nystagmus on Physical Exam

Convergence-retraction nystagmus: irregular, jerky nystagmus, associated with convergence and retraction of both
Convergence-Retraction ... associated with convergence ... damage to the supranuclear ... on the midbrain convergence ... @bobvarkey #Convergence
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
Convergence Retraction ... @bobvarkey #Convergence
Parinaud's Syndrome
What?
 - Impaired upgaze
 - Light-near dissociation
 - Convergence retraction nystagmus
 - Eyelid retraction (Collier's
dissociation - Convergence
Hyperopia: Pathogenesis and clinical findings
 • Axial length of eye -> Short axial length of the
Decreased light convergence ... rays require less convergence ... rays require more convergence
Parkinson's Plus Syndromes - Atypical Parkinsonism
Main motor symptoms:
 • Tremors
 • Limb rigidity
 • Bradykinesia
Other symptoms
• Progressive supranuclear
Causes of Bradykinetic Movement Disorders - Differential Diagnosis Algorithm
Parkinson's Disease (TRAP):
• Resting Tremor
• Cogwheel Rigidity
• Akinesia/Bradykinesia
•
Verapamil Progressive Supranuclear
Parinaud's syndrome
What?
 • Light-near dissociation (tectal pupils)
 • Convergence retraction nystagmus
 • Eyelid retraction (Collier's sign)
tectal pupils) • Convergence
Causes of Tremors - Movement Disorders - Differential Diagnosis Algorithm
Action Tremor - Occurs During Voluntary Muscle
• Progressive supranuclear
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Cerebral ptosis - Supranuclear
Convergence retraction nystagmus on physical exam secondary to dorsal midbrain lesion

#convergence #retraction #nystagmus #ocular #physicalexam #neurology
Convergence retraction ... midbrain lesion #convergence