[Arc-wedge keratoplasty as a method for correcting astigmatism]

In view of low effectiveness of optic correction of astigmatism a problem of its surgical correction becomes urging. A new operation for correction of astigmatism--arc wedge-keratoplasty, worked out by the authors, was made in 19 eyes with mixed and complex myopic astigmatism. Before operation the degree of astigmatism was, on the average, 6.8 +/- 2.11D (4.5-14.0), after operation--2.2 +/- 0.18D (0.18-5.5). The refractive effect made up, on the average, 4.6D (from 2.0 to 12.5). A change of a refractive power of the cornea was seen in both main meridians. The follow-up period ranged from 6 months to 4 years. The operation is highly effective and less traumatic than the known ones because only two notches are made and the central free zone not less than of 5 mm is preserved. A conclusion is made that operation of arc wedge-keratoplasty is advisable for correction of mixed astigmatism.