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What is Convergence-Retraction Nystagmus?

Convergence-Retraction Nystagmus is characterised by rapid convergence with synchronous

retraction of both globes slow divergence.

It is due simultaneous contraction of all EOM

This is best detected by:

  1. Looking up
  2. OKN

What is the site of lesion in convergence retraction nystagmus

Dorsal midbrain

Reference Notes 

What is See-Saw Nystagmus ?
What are the causes of Acquired Pendular nystagmus ?
What is Convergence-Retraction Nystagmus ?
Dissociated Jerk Nystagmus and causes
What is Rebound nystagmus and its causes?
What is Bruns's nystagmus?
What is Gaze evoked nystagmus?
Down-beat nystagmus and its causes
Upbeat nystagmus and its causes
What is the basic Pathophysiology of Nystagmus
Alexanders law in Nystagmus - A brief