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首页> 外文期刊>Journal of refractive surgery >Evaluating microkeratome efficacy by 3D corneal lamellar flap thickness accuracy and reproducibility using Artemis VHF digital ultrasound arc-scanning.
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Evaluating microkeratome efficacy by 3D corneal lamellar flap thickness accuracy and reproducibility using Artemis VHF digital ultrasound arc-scanning.

机译：使用Artemis VHF数字超声电弧扫描通过3D角膜层状皮瓣厚度准确性和可再现性评估微角膜刀的功效。

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PURPOSE: To present a method that determines the efficacy of flap creation using a microkeratome. METHODS: Thirty-six eyes of 18 patients were included in the study, operated by two experienced surgeons using the Moria LSK-One microkeratome. Very high-frequency (VHF) digital ultrasound arc-scanning using Artemis technology was used to measure the Reinstein Flap Thickness Profile created by addition of the preoperative epithelial thickness profile to the postoperative stromal component of the flap. Descriptive statistics revealed central flap thickness accuracy and reproducibility. Univariate and multivariate regression analysis was used to determine correlations between central flap thickness and preoperative clinical parameters. Three-dimensional flap thickness maps demonstrated the mean, median, standard deviation, and range of thickness. RESULTS: Intended flap thickness was 160 microm. Mean central flap thickness was 161 microm in the right eye and 166 microm in the left eye. Central reproducibility (standard deviation of the mean) was 30.3 microm, with a range of 106 to 228 microm. Central flap thickness correlated to preoperative corneal thickness measured by VHF digital ultrasound but not by Orbscan. On qualitative analysis, no consistency among eyes was observed in the three-dimensional flap thickness map. Flaps were on average thinner in the center, but not in all cases. CONCLUSIONS: A systematic qualitative and quantitative statistical evaluation of microkeratome accuracy and reproducibility can be performed by measuring corneal flap thickness with arc-scanning VHF digital ultrasound.
机译：目的：提出一种使用微角膜刀确定皮瓣产生功效的方法。方法：本研究包括18名患者的36眼，由两名经验丰富的外科医生使用Moria LSK-One微型角膜刀进行手术。使用Artemis技术的超高频（VHF）数字超声弧扫描用于测量Reinstein皮瓣厚度分布图，该图是通过将术前上皮厚度分布图添加到皮瓣的术后基质成分中而创建的。描述性统计显示中心瓣厚度的准确性和可重复性。单因素和多元回归分析用于确定中央皮瓣厚度与术前临床参数之间的相关性。三维襟翼厚度图显示了均值，中位数，标准偏差和厚度范围。结果：预期的皮瓣厚度为160微米。右眼平均中央皮瓣厚度为161微米，左眼平均为166微米。中心重现性（平均值的标准偏差）为30.3微米，范围为106到228微米。中央皮瓣厚度与术前角膜厚度相关，该角膜厚度通过VHF数字超声测量，而不是Orbscan。在定性分析中，在三维皮瓣厚度图中未观察到眼睛之间的一致性。皮瓣的中央平均较薄，但并非在所有情况下都较薄。结论：可以通过电弧扫描甚高频数字超声测量角膜瓣厚度来对微角膜刀的准确性和可重复性进行系统的定性和定量统计评估。

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