Spigelman A V, Williams P A, Nichols B D, Lindstrom R L
Department of Ophthalmology, University of Minnesota, Minneapolis 55455.
J Cataract Refract Surg. 1988 Mar;14(2):125-8. doi: 10.1016/s0886-3350(88)80085-3.
Radial keratotomy is a constantly evolving procedure. This paper investigates the value of four incision radial keratotomy. The possible advantages of fewer incisions include increased corneal stability, lower risk of perforation, less potential of endothelial cell loss, decreased chance of overcorrection, and simplification of the procedure. We evaluated the results of four incision radial keratotomy in 55 eyes of 31 patients. Follow-up ranged from one to 18 months. Results in low myopia (-2.00 to -3.12 diopters) show 93% of the patients were 20/40 or better, 90% were within +/- 1 diopter of emmetropia, and no patients were overcorrected greater than 1 diopter. In moderate myopia (-3.25 to -4.37 diopters), 84% of the patients were 20/40 or better, 92% were within +/- 1 diopter of emmetropia, and no patients were overcorrected greater than 1 diopter. Regression analysis was performed and it was determined that the postoperative result was equal to .262 + [1.293 x preop spherical equivalent] - [1.166 x optical zone] + [0.56 x depth] + [.038 x age], R = .87.
放射状角膜切开术是一种不断发展的手术。本文研究了四切口放射状角膜切开术的价值。切口较少可能具有的优势包括角膜稳定性增加、穿孔风险降低、内皮细胞丢失的可能性较小、过矫几率降低以及手术简化。我们评估了31例患者55只眼的四切口放射状角膜切开术的结果。随访时间为1至18个月。低度近视（-2.00至-3.12屈光度）的结果显示，93%的患者视力达到20/40或更好，90%的患者屈光不正度数在正视眼的±1屈光度范围内，且没有患者过矫超过1屈光度。在中度近视（-3.25至-4.37屈光度）中，84%的患者视力达到20/40或更好，92%的患者屈光不正度数在正视眼的±1屈光度范围内，且没有患者过矫超过1屈光度。进行了回归分析，结果确定术后结果等于0.262 + [1.293×术前等效球镜度] - [1.166×光学区] + [0.56×深度] + [0.038×年龄]，R = 0.87。
