放射状角膜切开术(RK)存在的问题仍是预测不准。无论手术如何细心,结果还有屈光差异。即使在有经验的术者,RK 矫正不足时有发生。据统计14%的病人要再次手术。切口过浅是 RK 矫正不足的常见原因。是否要增加切口数目呢?以往许多术者这样做,如再增加8条切口。但这只在原切口过浅的情况下才有效。若原切口够深,增加切口几乎是无效的。在已有8条切口时,再增加切口数,仅能 Radial keratotomy (RK) problems still unpredictable. No matter how carefully the surgery, the results there are differences in refractive error. Even with experienced surgeons, RK correction occurs from time to time. According to statistics, 14% of patients have to undergo surgery again. Too shallow incision is a common cause of inadequate RK correction. Do you want to increase the number of incisions? In the past many surgeons to do so, such as the increase of 8 incisions. However, this only works if the incision is too light. If the original incision deep enough to increase the incision is almost ineffective. In the existing eight incisions, and then increase the number of incisions, only