Pihlblad Matthew S, Erenler Feyza, Sharma Aman, Manchandia Ajay, Reynolds James D
J Pediatr Ophthalmol Strabismus. 2016 May 1;53(3):141-5. doi: 10.3928/01913913-20160405-05.
To assess the possibility of determining the insertion distance from the limbus of horizontal and vertical extraocular rectus muscles with anterior segment optical coherence tomography (AS-OCT).
The right eyes of 46 patients underwent AS-OCT. The horizontal and vertical extraocular rectus muscle insertion distances from the limbus were measured in a masked fashion by two pediatric ophthalmologists.
Forty-two lateral rectus, 43 medial rectus, 35 inferior rectus, and 40 superior rectus muscles of the right eyes of 46 patients were included. Insertion to limbus measurements (mean ± SD) were as follows: lateral rectus = mean 6.8 ± 0.7 mm, range = 4.8 to 8.4 mm; medial rectus = mean 5.7 ± 0.8 mm, range = 4.3 to 7.8 mm; inferior rectus = mean 6.0 ± 0.6 mm, range = 4.8 to 7.0 mm; superior rectus = mean 6.8 ± 0.6 mm, range = 5.5 to 8.1 mm. The intraobserver and interobserver correlation coefficients for the insertion to limbus measurements of all four rectus muscles exceeded 0.75 (excellent correlation).
The study showed that AS-OCT is capable of imaging all four of the rectus muscle insertions and measuring the insertion to limbus distance, and is the second AS-OCT study to image the superior and inferior rectus muscle insertions. The insertion to limbus measurements between examiners and on repeat measurements were consistent and reproducible. The ability to accurately image extraocular rectus muscle insertions may have future implications for the preoperative procedure planning in patients who have had previous surgery. [J Pediatr Ophthalmol Strabismus. 2016;53(3):141-145.].
评估使用眼前节光学相干断层扫描（AS - OCT）测定水平和垂直直肌从角膜缘插入距离的可能性。
对46例患者的右眼进行AS - OCT检查。由两名小儿眼科医生以盲法测量水平和垂直直肌从角膜缘的插入距离。
纳入了46例患者右眼中的42条外直肌、43条内直肌、35条下直肌和40条上直肌。从插入点到角膜缘的测量值（均值±标准差）如下：外直肌=均值6.8±0.7mm，范围=4.8至8.4mm；内直肌=均值5.7±0.8mm，范围=4.3至7.8mm；下直肌=均值6.0±0.6mm，范围=4.8至7.0mm；上直肌=均值6.8±0.6mm，范围=5.5至8.1mm。所有四条直肌从插入点到角膜缘测量值的观察者内和观察者间相关系数均超过0.75（相关性极佳）。
该研究表明AS - OCT能够对所有四条直肌的插入点进行成像并测量插入点到角膜缘的距离，这是第二项对上下直肌插入点进行成像的AS - OCT研究。检查者之间以及重复测量时从插入点到角膜缘的测量结果一致且可重复。准确对眼外直肌插入点进行成像的能力可能对既往接受过手术的患者术前手术规划具有未来意义。[《小儿眼科与斜视杂志》。2016；53(3)：141 - 145。]
