用于矫正-2至-25屈光度近视的准分子原位角膜磨镶术。

Laser in situ keratomileusis for myopia of -2 to -25 diopters.

作者信息

Tsai R J

机构信息

Department of Ophthalmology, Chang Gung Memorial Hospital, Chang Gung College of Medicine and Technology, Taipei, Taiwan.

出版信息

J Refract Surg. 1997 Aug;13(5 Suppl):S427-9. doi: 10.3928/1081-597X-19970801-06.

DOI:10.3928/1081-597X-19970801-06

PMID:9286783

Abstract

PURPOSE

To evaluate excimer laser in situ keratomileusis in the treatment of low, high, and excessively myopic eyes in Taiwan, 77 patients (104 eyes) were treated with Nidek EC-5000 excimer laser and divided into four groups.

METHODS

In situ keratomileusis was performed with a Chiron or SCMD microkeratome. The Nidek EC-5000 excimer laser was used, with multiple passes and a multiple zone ablation technique was performed for myopia higher than -10.00 D.

RESULTS

In eyes with a preoperative spherical power equal to or less than -7.00 D (29 eyes of 18 patients), the preoperative cycloplegic mean spherical equivalent refraction was -5.44 +/- 1.36 D. The mean postoperative subjective spherical equivalent refraction was 0.25 +/- 0.64 D at 1 month, 0.056 +/- 0.55 D at 3 months, -0.069 +/- 0.415 D at 6 months, and 0.022 +/- 0.496 D at 9 months. The predictability of postoperative 9 month results demonstrated that 86.21% of eyes were within +/-0.50 D, 96.55% were within +/-1.00 D, and 100% were within +/-2.00 D of emmetropia. In eyes with a preoperative spherical power equal to or less than -10.00 D and higher than -7.00 D, 26 eyes of 17 patients had a preoperative cycloplegic mean spherical equivalent refraction of -8.41 +/- 0.84 D. The mean postoperative subjective spherical equivalent refraction was -0.043 +/- 1.15 D at 1 month, -0.12 +/- 0.92 D at 3 months, -0.21 +/- 1.05 D at 6 months, and -0.37 +/- 1.04 D at 9 months. The predictability of postoperative 9 month results demonstrated that 76.92% of eyes were within +/-0.50 D, 80.77% were within +/-1.00 D, and 96.5% were within +/-2.00 D of emmetropia. In eyes with a preoperative spherical power equal to or less than -15.00 D and more than than -10.00 D, 40 eyes of 27 patients had a preoperative cycloplegic mean spherical equivalent refraction of -12.65 +/- 1.51 D. The mean postoperative subjective spherical equivalent refraction was 0.275 +/- 1.72 D at 1 month, -0.30 +/- 1.34 D at 3 months, -0.47 +/- 1.23 D at 6 months, and -0.62 +/- 1.23 D at 9 months. The predictability of postoperative 9 month results demonstrated that 62.5% of eyes were within +/-0.50 D, 75% were within +/-1.00 D, and 87.5% were within +/-2.00 D of emmetropia. For 19 eyes of 15 patients with a preoperative spherical power greater than -15.00 D, the preoperative cycloplegic mean spherical equivalent refraction was -19.53 +/- 2.61 D. The mean postoperative subjective spherical equivalent refraction was -0.40 +/- 1.22 D at 1 month, -0.69 +/- 1.34 D at 3 months, -0.83 +/- 1.40 D at 6 months, and -0.65 +/- 2.99 D at 9 months. The predictability of postoperative 9 month results demonstrated that 31.5% of eyes were within +/-0.50 D, 52.63% were within +/-1.00 D, and 63.16% were within +/-2.00 D.

CONCLUSION

LASIK is a safe and effective technique for the treatment of low, high, and excessive myopia.

摘要

目的

为评估准分子激光原位角膜磨镶术（LASIK）治疗台湾地区低度、高度及超高度近视的效果，对77例患者（104只眼）使用Nidek EC - 5000准分子激光进行治疗，并分为四组。

方法

使用Chiron或SCMD微型角膜刀进行原位角膜磨镶术。采用Nidek EC - 5000准分子激光，对于近视度数高于 - 10.00 D的患者进行多次扫描和多区消融技术。

结果

术前球镜度数等于或小于 - 7.00 D的患者（18例29只眼），术前睫状肌麻痹下平均球镜等效屈光度为 - 5.44±1.36 D。术后1个月平均主观球镜等效屈光度为0.25±0.64 D，3个月为0.056±0.55 D，6个月为 - 0.069±0.415 D，9个月为0.022±0.496 D。术后9个月结果的可预测性显示，86.21%的眼在正视眼±0.50 D范围内，96.55%在±1.00 D范围内，100%在±2.00 D范围内。术前球镜度数等于或小于 - 10.00 D且高于 - 7.00 D的患者（17例26只眼），术前睫状肌麻痹下平均球镜等效屈光度为 - 8.41±0.84 D。术后1个月平均主观球镜等效屈光度为 - 0.043±1.15 D，3个月为 - 0.12±0.92 D，6个月为 - 0.21±1.05 D，9个月为 - 0.37±1.04 D。术后9个月结果的可预测性显示，76.92%的眼在正视眼±0.50 D范围内，80.77%在±1.00 D范围内，96.5%在±2.00 D范围内。术前球镜度数等于或小于 - 15.00 D且高于 - 10.00 D的患者（27例40只眼），术前睫状肌麻痹下平均球镜等效屈光度为 - 12.65±1.51 D。术后1个月平均主观球镜等效屈光度为0.275±1.72 D，3个月为 - 0.30±1.34 D，6个月为 - 0.47±1.23 D，9个月为 - 0.62±1.23 D。术后9个月结果的可预测性显示，62.5%的眼在正视眼±0.50 D范围内，75%在±1.00 D范围内，87.5%在±2.00 D范围内。对于术前球镜度数大于 - 15.00 D的15例患者的19只眼，术前睫状肌麻痹下平均球镜等效屈光度为 - 19.53±2.61 D。术后1个月平均主观球镜等效屈光度为 - 0.40±1.22 D，3个月为 - 0.69±1.34 D，6个月为 - 0.83±1.40 D，9个月为 - 0.65±2.99 D。术后9个月结果的可预测性显示，31.5%的眼在正视眼±0.50 D范围内，52.63%在±1.00 D范围内，63.16%在±2.00 D范围内。