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目的观察下斜肌后徙转位术对眼球运动的影响。方法顺序选择手术后系统观察≥3年的下斜肌后徙转位和后徙手术两组病例,比较眼球运动状况,并观察前者原在位眼位。结果(1)下斜肌后徙转位组原在位均未出现下斜视,14例单眼手术病例有上转受限,以颞上方为著,6例双眼手术病例无明显上转受限。(2)下斜肌后徙转位组手术后远期(≥3年)下斜肌运动程度、眼球上转程度均明显低于下斜肌后徙组,P<0.001。(3)下斜肌后徙转位组术后远期下斜肌运动程度、眼球上转程度均低于近期(1周～1个月),P<0.05,而术后中期(3～6个月)与远期下斜肌运动程度、眼球上转程度之间无明显差异,P>0.05。结论下斜肌后徙转位术导致术后眼球运动出现非共同性变化,主要是上转受限,对侧眼上转亢进。
Objective To observe the effect of posterior oblique reposition on ocular motility. Methods Two groups of patients with retrograde oblique posterior migration and posterior migration surgeries of ≥ 3 years were systematically observed after surgery. The eye movement was compared and the former eye position was observed. Results (1) There was no inferior strabismus in the original posterior oblique shift group. In 14 cases of monocular surgery, there was a limited upward transfer to the superior temporal region. There was no significant up-conversion in 6 cases of binocular surgery. (2) In the long term (≥ 3 years), the degree of inferior oblique muscle movement and the turnup of the eyeball were significantly lower than those in the inferior oblique muscle retroposition group (P <0.001). (3) The degree of longissimus muscle movement and long-term eyeball turn-over were significantly lower than those of the short-term (1 week to 1 month), P <0.05, Months) and long-term inferior oblique muscle movement, no significant difference between the extent of eyeball turn, P> 0.05. Conclusions The posterior oblique muscle posterior shift poses a non-common change in the ocular movement after surgery, mainly due to limited up-turn and the contralateral eye.