[4-incision keratotomy: Saint Andrew's cross or the Greek cross?]

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".