Abducens nerve is present in patients with type 2 Duane's retraction syndrome

Ophthalmology. 2012 Feb;119(2):403-6. doi: 10.1016/j.ophtha.2011.08.001. Epub 2011 Oct 27.

Abstract

Objective: To determine whether the abducens nerve is present in patients with type 2 Duane's retraction syndrome (DRS).

Design: Retrospective, observational case series.

Participants: Twelve consecutive patients diagnosed with type 2 DRS.

Methods: A retrospective review of medical records of ophthalmologic examination and thin-sectioned magnetic resonance imaging (MRI) at the brainstem level and the orbit was performed on 12 patients who showed the typical signs of type 2 DRS, including adduction deficit; globe retraction; narrowing of fissure on adduction; and upshoot, downshoot, or both.

Main outcome measures: Presence of the abducens nerve and any other extraocular muscle abnormalities discovered by MRI scan.

Results: Magnetic resonance imaging revealed the presence of the abducens nerve in all the affected eyes (n = 13) of 12 patients with type 2 DRS.

Conclusions: The abducens nerve is present on the affected side in type 2 Duane's retraction syndrome.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abducens Nerve / pathology*
  • Abducens Nerve Diseases / diagnosis*
  • Duane Retraction Syndrome / diagnosis*
  • Eye Movements
  • Humans
  • Magnetic Resonance Imaging
  • Oculomotor Muscles / pathology
  • Retrospective Studies