Lemke B N, Khwarg S I
Davis Duehr Dean Clinic, Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison Medical School, 53715, USA.
Arch Ophthalmol. 1999 Feb;117(2):274-80. doi: 10.1001/archopht.117.2.274.
The eye is convergent from the orbital axis when in the primary gaze position; greater projection of the lateral sclera results from the posterior location of the lateral orbital rim relative to the medial orbital rim. If the horizontal tarsal ligamentous band cannot lengthen to accommodate an increasingly exophthalmic globe in thyroid ophthalmopathy, a horizontally tight eyelid with increased exposure of the lateral sclera will result; thus, temporal flare is accentuated. Lateral canthal advancement was developed as an adjuvant procedure to reduce temporal flare in the surgical repair of thyroid-related eyelid retraction. Lateral canthal advancement is a theoretically rational and effective adjunct to retractor recession when horizontal tightness of the eyelid is present. In the horizontally tight eyelid, lateral canthal advancement is effective in enhancing the effect of retractor recession and in reducing temporal flare.
在第一眼位时，眼球向眶轴汇聚；眶外侧缘相对于眶内侧缘位于后方，导致外侧巩膜的投影更大。在甲状腺眼病中，如果水平睑板韧带带不能延长以适应眼球突出度增加的情况，就会导致水平方向上眼睑紧绷，外侧巩膜暴露增加；因此，颞侧耀斑会更加明显。外眦移位术是作为一种辅助手术发展而来的，用于在甲状腺相关眼睑退缩的手术修复中减少颞侧耀斑。当眼睑存在水平紧绷时，外眦移位术在理论上是合理且有效的牵开器后退辅助手术。在水平紧绷的眼睑中，外眦移位术在增强牵开器后退效果和减少颞侧耀斑方面是有效的。
