The results of sound image localization theory and psychoacoustic experiment prove that the rotation of head has little effect on the front image, but has some effect on lateral image.

声像定位理论和心理声学实验结果表明，头部转动对前方声像方向的影响较少，主要是影响侧向声像方向。

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The lateral crus of the lateral canthus ligament is then incised (right image).

然后切开外眦韧带的外侧脚(右图)。

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Sterile scissors are then used to make a horizontal incision through the skin and orbicularis muscle at the lateral canthal Angle 1 cm toward the lateral orbital rim (left image).

然后使用无菌剪刀经皮肤和眼轮匝肌在外眦角处作一个朝向眶外侧缘长约1 cm的切口(左图)。

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