Femtosecond Lenticule Extraction (FLEx) for Spherocylindrical Hyperopia Using New Profiles
Femtosecond Lenticule Extraction (FLEx) for Spherocylindrical Hyperopia Using New Profiles
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DOI：
10.3928/1081597x-20171031-01
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发表时间：
2018-01-01
影响因子：
2.4
通讯作者：
Blum, Marcus
中科院分区：
文献类型：
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作者：
Sekundo, Walter;Messerschmidt-Roth, Anke;Blum, Marcus
目得：研究新的角膜曲率轮廓，通过飞秒角膜曲率提取（FLEx）治疗远视球柱镜远视，使用改良的激光扫描sequence.METHODS：在这项为期9个月的前瞻性研究中，22例患者的39只眼，平均年龄为49岁（范围：27至56岁），接受了远视FLEx。平均光学区为6 mm（范围：5.75至6.75 mm），角膜曲率读数和矫正程度调整后的平均过渡区为2.1 mm（范围：1.80至2.89 mm）。结果：术前等效球镜表观屈光度为+ 1.96 ± 1.04D（范围：+ 0.63 ~+4.50D）。由于老视年龄，治疗的目的是在75%的眼睛治疗低度近视。在最终9个月随访访视时，平均等效球镜为-0.40 +/- 0.61 D（范围：-1.50至+0.75 D），70%的治疗眼在预期矫正的+/- 0.50 D内，89%的治疗眼在预期矫正的+/- 1.00 D内。术后1周~ 6个月的回归系数为+0.29D，术后6 ~ 9个月的回归系数为0.03D。共10%的眼睛分别失去一行矫正远视力。没有出现两行或更多视力损失，也没有出现任何严重的术中或术后并发症。结论：通过FLEx治疗球柱远视，其屈光结果与已发表的远视飞秒激光辅助LASIK结果相似。
PURPOSE: To investigate new lenticule profiles for the treatment of hyperopia by femtosecond lenticule extraction (FLEx) for spherocylindrical hyperopia using a modified laser scan sequence.METHODS: In this prospective 9-month study, 39 eyes of 22 patients with the mean age of 49 years (range: 27 to 56 years) underwent hyperopic FLEx. The mean optical zone was 6 mm (range: 5.75 to 6.75 mm) with keratometry readings and magnitude of correction adjusted mean transition zone of 2.1 mm (range: 1.80 to 2.89 mm). The lenticule thickness was set at 25 mu m in the center and 10 mu m at the edge.RESULTS: Preoperative spherical equivalent manifest refraction was + 1.96 +/- 1.04 diopters (D) (range: + 0.63 to +4.50 D). Because of the presbyopic age, the treatment was aimed at low myopia in 75% of the eyes treated. At the final 9-month follow-up visit, the mean spherical equivalent was -0.40 +/- 0.61 D (range: -1.50 to + 0.75 D), with 70% of eyes treated within +/- 0.50 D and 89% of eyes within +/- 1.00 D of intended correction. The regression was + 0.29 D between 1 week and 6 months but 0.03 D between 6 and 9 months. A total of 10% of eyes lost one line of corrected distance visual acuity, respectively. There were no losses of two or more lines of visual acuity or any serious intraoperative or postoperative complications.CONCLUSIONS: Treatment of spherocylindrical hyperopia by FLEx led to refractive results similar to published outcomes on hyperopic femtosecond laser-assisted LASIK.