Department of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
Ophthalmology. 2012 Feb;119(2):403-6. doi: 10.1016/j.ophtha.2011.08.001. Epub 2011 Oct 27.
To determine whether the abducens nerve is present in patients with type 2 Duane's retraction syndrome (DRS).
Retrospective, observational case series.
Twelve consecutive patients diagnosed with type 2 DRS.
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.
Presence of the abducens nerve and any other extraocular muscle abnormalities discovered by MRI scan.
Magnetic resonance imaging revealed the presence of the abducens nerve in all the affected eyes (n = 13) of 12 patients with type 2 DRS.
The abducens nerve is present on the affected side in type 2 Duane's retraction syndrome.
确定 2 型 Duane 退缩综合征（DRS）患者是否存在外展神经。
回顾性观察性病例系列。
12 例连续确诊的 2 型 DRS 患者。
对 12 例表现出典型 2 型 DRS 体征的患者进行眼科检查和脑桥水平及眼眶薄层磁共振成像（MRI）的回顾性病历审查，这些体征包括内收不足；眼球退缩；内收时裂变窄；上跳、下跳或两者均有。
MRI 扫描发现的外展神经和任何其他眼外肌异常的存在。
MRI 显示 12 例 2 型 DRS 患者的 13 只受累眼（n = 13）均存在外展神经。
2 型 Duane 退缩综合征受累侧存在外展神经。
