Mathys B, Haverbeke L
Bull Soc Belge Ophtalmol. 1989;234:25-8.
For low to moderate myopes (-1.50 to -4.50) having a four-incisions keratotomy, the authors compare the disposition of the cuts: like a "x" in one eye or like a "+" in the opposite eye. Visual acuity, pre- and postoperative keratometry and the evaluation of astigmatism are necessary to establish the efficacity of these "crosses".
对于接受四切口角膜切开术的低度至中度近视患者（-1.50至-4.50），作者比较了切口的布局：一只眼睛为“x”形，另一只眼睛为“+”形。为了确定这些“交叉”的有效性，视力、术前和术后角膜曲率测量以及散光评估是必要的。
