Bores L D, Myers W, Cowden J
Ann Ophthalmol. 1981 Aug;13(8):941-8.
A total of 223 patients with bilateral nonprogressive myopia ranging from - to - 11 D underwent partial-thickness radial keratotomy (400 eyes). Topical anesthesia was used for all surgery and all patients had 16 radial incisions from a preset central optical zone, determined by table and/or formula. Neither corneal diameter or scleral rigidity was taken into account in these groups. Substantial reduction of myopia resulted immediately in all cases, with Group 1 showing a 44% regression of the myopia with stabilization occurring at three months. Group 2 showed a 14% regression of effect. In Group 1, 28% attained an unaided visual acuity (postoperatively) of 20/40 or better for most of the day, while 61% of Group 2 attained the same result. Night glare was present in both groups, usually subsiding in three months. Fluctuation was reported in both groups. Side effects were mild. The comparison of the two groups shows that incisions carried almost to Descemet's membrane and deepened in the periphery resulted in much greater reduction of the myopia and a more permanent and stable effect following surgery. New methods of measuring corneal curvature are necessary and a more satisfactory blade needs to be developed for surgery. Corneal thickness measurements have been made more accurate by the development of the ultrasonic pachymeter.
共有223例双眼非进行性近视患者（近视度数在-至-11D之间）接受了放射状角膜切开术（400只眼）。所有手术均采用表面麻醉，所有患者均从预设的中央光学区进行16条放射状切口，该光学区由表格和/或公式确定。这些组未考虑角膜直径或巩膜硬度。所有病例近视均立即显著降低，第1组近视度数回退44%，3个月时趋于稳定。第2组效果回退14%。第1组中，28%的患者术后大部分时间裸眼视力达到20/40或更好，而第2组为61%。两组均出现夜间眩光，通常在3个月内消退。两组均有视力波动报告。副作用较轻。两组比较表明，切口几乎到达后弹力层并在周边加深，术后近视度数降低幅度更大，效果更持久稳定。需要新的角膜曲率测量方法，并且需要开发更理想的手术刀片。超声测厚仪的发展使角膜厚度测量更加准确。
