Lipshitz I, Man O, Shemesh G, Lazar M, Loewenstein A
Ophthalmic Health Center (Lipshitz, Shemesh), Israel.
J Cataract Refract Surg. 2001 Feb;27(2):273-6. doi: 10.1016/s0886-3350(00)00817-8.
To assess the safety and efficacy of excimer laser in situ keratomileusis (LASIK) to correct hyperopic shift following radial keratotomy (RK).
Ophthalmic Health Center, Tel Aviv, Israel.
The study comprised 15 eyes of 12 patients who had uneventful RK and subsequently developed a hyperopic shift. Laser in situ keratomileusis was performed using the Chiron Automated Corneal Shaper and the Nidek EC-5000 excimer laser with 5.5 mm central and 7.5 mm peripheral ablation zones. The corneal flap was 160 microm in thickness and 8.5 mm in diameter. The refractive correction corresponded to the patients' refractive errors.
The mean time after RK was 10.46 years +/- 2.21 (SD) and the mean follow-up after LASIK, 7.3 months (range 1 to 42 months). The mean spherical equivalent refraction was corrected from +3.08 +/- 1.02 diopters (D) to -0.16 +/- 0.73 D after LASIK. At the last examination, 12 eyes (80%) had a refractive error within +/-1.00 D of emmetropia and an uncorrected visual acuity of 20/40 or better. No wound dehiscence, epithelial ingrowth, or other significant complication developed in any eye.
Early postoperative results of the correction by LASIK of a hyperopic shift after RK are encouraging, but long-term studies of a larger population group are required to evaluate the method's clinical value.
评估准分子激光原位角膜磨镶术（LASIK）矫正放射状角膜切开术（RK）后远视漂移的安全性和有效性。
以色列特拉维夫眼科健康中心。
该研究纳入了12例患者的15只眼，这些患者RK手术顺利，随后出现了远视漂移。使用Chiron自动角膜成形器和Nidek EC - 5000准分子激光进行LASIK手术，中央消融区直径为5.5 mm，周边消融区直径为7.5 mm。角膜瓣厚度为160微米，直径为8.5 mm。屈光矫正与患者的屈光不正相对应。
RK术后平均时间为10.46年±2.21（标准差），LASIK术后平均随访时间为7.3个月（范围1至42个月）。LASIK术后平均等效球镜度从+3.08±1.02屈光度（D）矫正至-0.16±0.73 D。在最后一次检查时，12只眼（80%）的屈光不正度数在正视眼±1.00 D范围内，未矫正视力为20/40或更好。所有眼中均未出现伤口裂开、上皮内生或其他严重并发症。
LASIK矫正RK后远视漂移的早期术后结果令人鼓舞，但需要对更大人群进行长期研究以评估该方法的临床价值。
