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Updated: May 28, 2026

Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
Published on: May 12, 2011
Abducens nerve is present in patients with type 2 Duane's retraction syndrome
Jae Hyoung Kim1, Jeong-Min Hwang
1Department of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
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.
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