LASIK with the optimized aspheric transition zone and cross-cylinder technique for the treatment of astigmatism from 1.00 to 4.25 diopters.
LASIK with the optimized aspheric transition zone and cross-cylinder technique for the treatment of astigmatism from 1.00 to 4.25 diopters.
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DOI：
10.3928/1081597x-20090915-05
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发表时间：
2009-10
影响因子：
2.4
通讯作者：
Tamer O Gamaly
中科院分区：
文献类型：
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作者：
Tamer O Gamaly
目的评价LASIK手术中采用优化非球面过渡区（OATz）和交叉柱镜技术矫正1.00 ~ 4.25D散光的预测性和安全性。方法对48例74眼LASIK术后散光1.00 ~ 4.25D的患者进行前瞻性研究。所有患眼均使用NIDEK CXIII准分子激光平台，采用OATz算法的轮廓7进行激光消融。根据术后6个月的数据评估屈光结果、视力和患者满意度。结果：术前明显屈光度等效球镜（MRSE）为-2.10+/-1.19 D（范围：-0.50 ~-5.75 D），平均柱镜为-1.94+/-0.89 D（范围：-1.00 ~-4.25 D）。术后6个月时，所有患眼的平均MRSE为0.01+/-0.37 D（范围：-0.75至+1.00 D）。术后，78.3%（58/74）的患眼裸眼视力（UCVA）达到20/20或更好，97.3%（72/74）的患眼裸眼视力达到20/40或更好。关于可预测性，94.6%（70/74）的患眼在预期MRSE的+/-0.50 D范围内，98.6%（73/74）的患眼在预期MRSE的+/-1.00 D范围内。6个月时，4只（5.3%）眼睛的最佳矫正视力丧失两行。在1至3个月之间达到稳定性，并在术后6个月进行验证。结论LASIK联合OATz和交叉柱镜技术治疗散光达4.25 D的患者是安全和可预测的。
PURPOSE The predictability and safety of LASIK with the optimized aspheric transition zone (OATz) and cross-cylinder technique were evaluated for the surgical correction of myopia with 1.00 to 4.25 diopters (D) of astigmatism. METHODS In this prospective study, 74 eyes of 48 consecutive LASIK patients with astigmatism ranging from 1.00 to 4.25 D were evaluated. All eyes underwent laser ablation with profile 7 of the OATz algorithm with the NIDEK CXIII excimer laser platform. Refractive outcomes, visual acuity, and patient satisfaction were assessed based on 6-month postoperative data. RESULTS Preoperative manifest refraction spherical equivalent (MRSE) was -2.10+/-1.19 D (range: -0.50 to -5.75 D) and mean cylinder was -1.94+/-0.89 D (range: -1.00 to -4.25 D). At 6 months postoperatively, the mean MRSE for all eyes was 0.01+/-0.37 D (range: -0.75 to +1.00 D). Postoperatively, 78.3% (58/74) of eyes achieved uncorrected visual acuity (UCVA) of 20/20 or better, and 97.3% (72/74) of eyes achieved UCVA of 20/40 or better. Regarding predictability, 94.6% (70/74) of eyes were within +/-0.50 D of intended MRSE and 98.6% (73/74) of eyes were within +/-1.00 D of intended MRSE. Four (5.3%) eyes lost two lines of best spectacle-corrected visual acuity at 6 months. Stability was reached between 1 and 3 months and verified at 6 months postoperatively. CONCLUSIONS LASIK with OATz and the cross-cylinder technique is safe and predictable for the treatment of patients with astigmatism up to 4.25 D.