Keech R V, Scott W E, Baker J D
Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City 52242.
Am J Ophthalmol. 1990 Jan 15;109(1):79-84. doi: 10.1016/s0002-9394(14)75584-9.
The distance from the corneoscleral limbus to the insertion site of the medial rectus muscle was measured at several stages of medial rectus recession surgery in 20 patients (40 eyes) with infantile esotropia. Disinsertion of the medial rectus muscle resulted in a mean reduction in the distance from the muscle insertion site to the corneoscleral limbus of 0.903 mm (P less than .001), whereas the use of fixation forceps on the insertion to abduct the eye resulted in an additional mean reduction of 0.306 mm (P less than .01). The strabismus surgeon often uses the muscle insertion site as a reference point in determining the desired location for recessing a muscle. Our results suggest that this method of measurement is unreliable in infantile esotropia because the position of the medial rectus muscle insertion site varies considerably during surgery.
在20例（40只眼）婴儿型内斜视患者的内直肌后徙手术的几个阶段，测量了从角膜缘到内直肌附着点的距离。内直肌断离导致肌肉附着点到角膜缘的距离平均减少0.903mm（P＜0.001），而在附着点使用固定镊外展眼球导致距离又平均额外减少0.306mm（P＜0.01）。斜视外科医生在确定肌肉后徙的理想位置时，常常将肌肉附着点作为参考点。我们的结果提示，这种测量方法在婴儿型内斜视中不可靠，因为手术过程中内直肌附着点的位置变化很大。
