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首页> 外文期刊>Strabismus >Ultrasound biomicroscopy in strabismus surgery: Efficacy in postoperative assessment of horizontal muscle insertions
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Ultrasound biomicroscopy in strabismus surgery: Efficacy in postoperative assessment of horizontal muscle insertions

机译：斜视手术中的超声生物显微镜：水平肌肉插入术后评估的功效

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Purpose: To study the efficacy of ultrasound biomicroscopy (UBM) in assessment of extraocular muscle insertion sites after strabismus surgery. Methods: This double masked prospective interventional study included 16 eyes of 15 patients with deviation <60 prism diopters (PD) who underwent primary horizontal strabismus surgery. Preoperative muscle insertion was measured by UBM and compared with measurements done intraoperatively by surgical caliper. Both measurements by surgical caliper were taken intraoperatively before and after performing the planned repositioning of the muscle insertion. Postoperatively muscle insertion was remeasured by UBM and compared with the presumed muscle insertion after surgery. Clinically limits of agreement of±1mm were taken as acceptable. Results: Mean age of patients was 21±3 years (range 16-28 years). Preoperative average distance of the medial rectus (MR) from limbus was 5.3±0.3mm (4.9-5.9mm) by the UBM and 5.6±0.3 (5-6mm) by surgical caliper (p=0.05). For lateral rectus (LR), UBM measurements from the limbus were 6.8±0.7mm (5.9-8.3mm) and 7.1±0.4mm (6.5-8mm) by calipers (p=0.067). Post-op UBM at 3 months could visualize new muscle insertion for all operated MR muscles (i.e., 100% of cases) and for LR muscles in only 50% of cases. However, accuracy could be achieved only in 78.6% of cases for MR muscle and for LR in 62.5% of cases (among LR muscles that were visible post-op). Maximum distance posterior to the limbus that the UBM was able to detect MR was 11.2mm and for LR was 13.5mm. Conclusion: UBM does not detect the new position of LR with any consistency postoperatively. Even after detection of muscle, the new insertion is only within ±1mm of the actual muscle insertion in 62.5% of the cases. Hence it is not a reliable tool for planning resurgery.
机译：目的：研究斜视手术后超声生物显微镜（UBM）在评估眼外肌插入部位的功效。方法：这项双掩蔽前瞻性干预研究包括15例行水平斜视手术的偏差＜60棱镜屈光度（PD）的患者的16只眼。手术前的肌肉插入是通过UBM测量的，并与手术卡尺在术中进行的测量相比较。手术卡尺的两种测量均在进行计划的肌肉插入位置的术中前后进行。术后用UBM重新测量肌肉的插入，并与手术后假定的肌肉插入进行比较。可接受的临床一致性极限为±1mm。结果：患者的平均年龄为21±3岁（范围16-28岁）。 UBM术前平均直肌距角膜缘的距离为5.3±0.3mm（4.9-5.9mm），手术卡尺为5.6±0.3（5-6mm）（p = 0.05）。对于外侧直肌（LR），通过卡尺测量角膜缘的UBM测量值为6.8±0.7mm（5.9-8.3mm）和7.1±0.4mm（6.5-8mm）（p = 0.067）。术后3个月的UBM可以显示所有手术MR肌肉（即100％的病例）和LR肌肉中只有50％的病例的新肌肉插入。但是，只有MR肌肉的78.6％和LR 62.5％的病例（术后可见的LR肌肉）的准确率才能达到。 UBM能够检测到角膜缘到角膜缘后的最大距离是11.2mm，而对于LR，最大距离是13.5mm。结论：UBM术后没有发现任何一致性的LR新位置。即使在检测到肌肉后，在62.5％的情况下，新的插入也仅在实际肌肉插入的±1mm之内。因此，它不是用于规划手术的可靠工具。

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