Hoffman W Y, McCarthy J G, Cutting C B, Zide B M
Department of Plastic Surgery, University of California, San Francisco.
Ann Plast Surg. 1990 Aug;25(2):124-31. doi: 10.1097/00000637-199008000-00009.
Computerized tomographic scans provide a new means of evaluating the spatial and geometric relationships between the movement of the bony orbit and its soft tissue contents (the globe and extraocular muscles) [1, 12]. Preoperative and postoperative computerized tomographic scans were analyzed in four patients to explore these relationships. Measurement of the changes in distance between the globes correlated most closely with the change in the distance between the lateral orbital walls; resection of medial (inter-orbital) bone provides space into which the globe is translocated. The medial rectus muscle may be bowed across the medial wall osteotomy line, creating a functional shortening of the muscle; this finding may explain the esotropia that is commonly seen after this procedure [2, 3]. These observations should have a direct impact on the understanding and planning of orbital hypertelorism correction.
计算机断层扫描提供了一种新的方法来评估骨性眼眶运动与其软组织内容物（眼球和眼外肌）之间的空间和几何关系[1,12]。对4例患者的术前和术后计算机断层扫描进行分析以探究这些关系。眼球间距离变化的测量与眶外侧壁间距离的变化相关性最强；内侧（眶间）骨切除可提供空间，使眼球得以移位。内直肌可能会跨过内侧壁截骨线形成弓形，导致肌肉功能性缩短；这一发现可能解释了该手术后常见的内斜视[2,3]。这些观察结果应会对眶距增宽症矫正的理解和规划产生直接影响。
