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Study on Ocular Torsion of Ⅴ Patterns Strabismus

机译：Ⅴ型斜视眼扭转的研究

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Purpose: To investigate the ocular torsion of Ⅴ patterns. Methods: Twenty-two in hospital Ⅴ patterns patients underwent bilateral inferior oblique muscles myectomy for inferior oblique overacting and hortizon recti underwent recess-resection procedure to correct hortizon devation. Objective cycloposition was assessed by fundus photograph before and 7 days after surgery in all cases. The photographs was stored in computer, and the disc-fovea angle was measured by means of drawing picture software. As well as the deviation, oblique muscle function was recorded before and after surgery. Result: Seventeen cases were bilateral ocular excyclotropia, 4 cases were monocular excyclotropia and one case was normal. The disc-fovea angle of right eyes and left eyes before operation is 15.67°+-5.72° and 16.59°+-6.69°. The comparisons among Ⅴ patterns and normal average showed significant differences (P < 0.001). The disc-fovea angle of right eyes and left eyes after operation is 5.24° +-5.87° and 7.17°+-5.40°. There is no statistic difference between normal average( P > 0.5). The deviation between up-and down 25° is 23.1+-6.8 before surgery, as well as the one is 2.0+-2.25 one week postoperatively. All cases have bilateral inferior oblique overaction, and diminished but one case still has unilateral moderate overaction 7 days after surgery. Conclusion: There is objective cyclotropia in case of Ⅴ patterns, and the objective torsion is normal after weakening overacted inferior oblique muscles.
机译：目的：探讨Ⅴ型眼球扭转。方法：对22名住院Ⅴ型患者行双侧下斜肌肌切除术治疗下斜肌过度矫正，并采用蒂直肠切除术以纠正蒂畸形。在所有病例中，术前和术后7天通过眼底照片评估客观的环置术。将照片存储在计算机中，并通过绘图软件测量圆盘中央凹角度。除偏差外，还记录了手术前后的斜肌功能。结果：双眼双眼屈光性异常17例，单眼双眼屈光性异常4例，正常1例。术前右眼和左眼的椎间盘中央凹角为15.67°+ -5.72°和16.59°+ -6.69°。 Ⅴ型与正常平均值之间的比较显示出显着差异（P <0.001）。手术后右眼和左眼的椎间盘中央凹角为5.24°+ -5.87°和7.17°+ -5.40°。正常平均值之间无统计学差异（P> 0.5）。手术前25°的上下偏差为23.1 + -6.8，术后1周的偏差为2.0 + -2.25。所有病例均具有双侧下斜肌过度活动，并已减轻，但1例在术后7天仍单侧中度过度活动。结论：Ⅴ型存在客观性斜视，弱化下斜肌过度运动后客观扭转正常。

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