Evaluation of Femtosecond Laser Intrastromal Incision Location Using Optical Coherence Tomography.
Evaluation of Femtosecond Laser Intrastromal Incision Location Using Optical Coherence Tomography.
复制标题
使用光学相干断层扫描评估飞秒激光基质切口位置。
DOI：
10.1016/j.ophtha.2017.03.022
复制
发表时间：
2017
期刊：
影响因子：
13.7
通讯作者：
Koch,DouglasD
中科院分区：
文献类型：
--
作者：
Wang,Li;Jiang,Lai;Hallahan,Katie;Al-Mohtaseb,ZainaN;Koch,DouglasD
目的应用光学相干断层扫描（OCT）评价白内障手术中飞秒激光角膜内切口对减少角膜散光的作用。design回顾性案例系列。参与者：77名患者的77只眼睛。方法使用Catalys飞秒激光（Abbott Medical Optics, Inc., Santa Ana， CA）制作西班牙眼内切口。计划的眶内切口参数为前切口20%，后切口20%，中点深度50%，侧切角90°。术后3周或更长时间进行光学相干断层扫描，评估这4个参数，并将实际值与预期值进行比较。主要观察指标：前后未切开组织的百分比、中点深度和侧切角的程度。结果未切前牙的平均值为17.2±5.8%（范围，7.2% ~ 36.9%），未切后牙的平均值为32.5±8.8%（范围，6.0% ~ 57.9%），中点深度平均值为42.3±6.6%（范围，25.5% ~ 65.4%），与计划参数差异均有统计学意义（均p < 0.05）。平均侧切角为88.5°±5.6°（范围71°-114°），与计划侧切角90°差异有统计学意义（P< 0.05）。对50只眼进行配对的OCT扫描，配对切口的中点深度与侧切角无相关性（相关系数r分别为- 0.063和- 0.067;P < 0.05）。结论术中切口中点深度明显前移50%。两眼配对的眶内切口位置不相关。需要进一步的改进来确保使用该设备进行的星间切口的精确位置。
PurposeTo use optical coherence tomography (OCT) to evaluate the femtosecond laser intrastromal incisions made during cataract surgery to reduce corneal astigmatism.DesignRetrospective case series.ParticipantsSeventy-seven eyes of 77 patients.MethodsPaired intrastromal incisions were created using the Catalys femtosecond laser (Abbott Medical Optics, Inc., Santa Ana, CA). The planned intrastromal incision parameters were 20% uncut anterior, 20% uncut posterior, midpoint depth of 50%, and 90° side cut angle. Optical coherence tomography scans were obtained 3 weeks or more after surgery to assess these 4 parameters, and actual values were compared with intended values.Main Outcome MeasuresPercentages of uncut anterior and posterior tissue, midpoint depth, and degrees of side cut angle.ResultsThe mean values were 17.2±5.8% (range, 7.2%–36.9%) for uncut anterior, 32.5±8.8% (range, 6.0%–57.9%) for uncut posterior, and 42.3±6.6% (range, 25.5%–65.4%) for midpoint depth, which all were significantly different from the planned parameters (allP< 0.05). The mean side cut angle was 88.5°±5.6° (range, 71°–114°) and was significantly different from the planned side cut angle of 90° (P< 0.05). In 50 eyes that had paired intrastromal incisions scanned by the OCT, there was no correlation between the paired incisions for midpoint depth and side cut angle (correlation coefficient,r= −0.063 and −0.067, respectively;P> 0.05).ConclusionsThe intrastromal incision midpoint depth was significantly more anterior than the planned depth of 50%. The locations of paired intrastromal incisions in each eye were not correlated. Further improvements are needed to ensure the precise location of the intrastromal incisions made with this device.