应用 CLEAR 飞秒激光进行角膜扁平膜摘除术后的有效光学区域

Q2 Medicine
Laser therapy Pub Date : 2023-11-23 DOI:10.4081/ltj.2023.326
Antonio Leccisotti, Stefania V. Fields, G. De Bartolo, Christian Crudale
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引用次数: 0

摘要

激光矫正近视的有效光学区(EOZ)比程序光学区(POZ)小 16% 到 26%。在一项回顾性、连续性、对比性病例系列研究中,我们评估了使用新型飞秒激光应用(CLEAR)对散光≤1屈光度(D)的近视患者进行角膜透镜摘除术后的有效光学区(EOZ)与程序光学区(POZ)的比较。40名患者的40只眼睛接受了Ziemer CLEAR®应用的皮孔摘除术;对照组由40名患者的40只眼睛组成,他们都接受了近视飞秒激光原位角膜磨镶术(LASIK);EOZ是在6个月时根据切线差图计算出来的。对于皮瓣摘除术,术前平均球面等值(SE)为-6.03±2.48 D;平均POZ为6.43±0.27 mm;EOZ为5.55±0.45 mm;POZ与EOZ的平均差值为0.88±0.28 mm(P=0.00);EOZ与POZ相比的平均减少率为13.60%±4.75;发现术前SE与EOZ的减少率呈正相关(r=0.63)。对于 LASIK,术前 SE 的平均值为 -5.89±2.14 D;POZ 的平均值为 6.57±0.34 mm;EOZ 的平均值为 5.16±0.53 mm;POZ 与 EOZ 之间的平均差异为 1.41±0.35 mm(P=0.00);EOZ 与 POZ 相比的平均减少率为 21.46%±5.20。两种手术的 EOZ 平均差异为 0.39 mm(P=0.0008)。两种手术的光学区缩小(POZ-EOZ)的平均差异为-0.53(P=0.00)。总之,对于低散光的近视患者,与现有平台相比,CLEAR 应用于皮瓣摘除术能有限地减少 EOZ。矫正 SE 与 EOZ 的减少之间存在正相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effective optical zone after corneal lenticule extraction with the CLEAR femtosecond laser application
Laser vision correction of myopia induces an effective optical zone (EOZ) smaller than the programmed optical zone (POZ) by 16 to 26%. We evaluated the EOZ after corneal lenticule extraction for myopia with astigmatism ≤1 diopter (D) with a new femtosecond laser application (CLEAR), compared to POZ in a retrospective, consecutive, comparative case series study. Forty eyes of 40 patients underwent lenticule extraction with the Ziemer CLEAR® application; the control group was composed of 40 eyes of 40 patients receiving myopic femtosecond laser in situ keratomileusis (LASIK); EOZ was calculated on difference tangential maps at 6 months. For lenticule extraction, mean preoperative spherical equivalent (SE) was -6.03±2.48 D; mean POZ was 6.43±0.27 mm; EOZ 5.55±0.45 mm; mean difference between POZ and EOZ was 0.88 ± 0.28 mm (p=0.00); the mean reduction of EOZ compared to POZ was 13.60%±4.75; a positive correlation between preoperative SE and percent reduction of EOZ was found (r=0.63). For LASIK, mean preoperative SE was -5.89±2.14 D; mean POZ was 6.57±0.34 mm; EOZ 5.16±0.53 mm; the mean difference between POZ and EOZ was 1.41±0.35 mm (p=0.00); the mean reduction of EOZ compared to POZ was 21.46%±5.20. The mean difference between EOZ of the 2 procedures was 0.39 mm (p=0.0008). The mean difference between the reduction in optical zone (POZ-EOZ) of the 2 procedures was -0.53 (p=0.00). In conclusion, in myopia with low astigmatism, the CLEAR application for lenticule extraction provided a limited reduction in EOZ, compared with existing platforms. A positive correlation exists between corrected SE and reduction of the EOZ.
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来源期刊
Laser therapy
Laser therapy Medicine-Surgery
CiteScore
2.80
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