Valmaggia C, Zaunbauer W, Gottlob I
Department of Strabismus and Neuroophthalmology, Kantonsspital St. Gallen, Switzerland.
Am J Ophthalmol. 1996 Apr;121(4):444-5. doi: 10.1016/s0002-9394(14)70445-3.
To report an elevation deficit, which was caused by an accessory extraocular muscle, in a 6-year-old boy.
Computed tomography and magnetic resonance imaging were used to confirm an accessory, fusiform, well-defined, solid structure in the retrobulbar space.
A supernumerary intraconal muscle was detected between the annulus of Zinn and the posterior part of the left globe.
This rare anomaly may represent an atavistic retractor bulbi muscle.
报告一名6岁男孩因一条额外的眼外肌导致的眼球抬高不足。
使用计算机断层扫描和磁共振成像来确认球后间隙内一个额外的、梭形、边界清晰的实性结构。
在Zinn环和左眼球后部之间检测到一条额外的肌锥内肌。
这种罕见的异常可能代表一种返祖的眼球退缩肌。
