Fig. 13 The wedge resection is designed to steepen the flattest corneal meridian (keratometry reading of 42.00 × 150 degrees) by removing a wedge of corneal tissue and suturing the edges together. (From Krachmer JH, Fenzl RE: Surgical correction of high postkeratoplasty astigmatism. Arch Ophthalmol 98:1400, 1980. Copyright © 1980, American Medical Association)