Surgical correction of postoperative astigmatism

Abstract

Despite the use of small incisions, better wound closure, and other technical improvements in cataract and corneal surgery. Astigmatism remains a problem for the cataract and refractive surgeon. (Thoronton, S.P., 1990) This study performed to evaluate selective removal of stitches and arcuate keratotomy in reduction of post-cataract . astigmatism . It has been done over 50 patients with post­ cataract astigmatism between -1.5 and -9.0 D. divided into two. groups. The first group underwent selective removal of stitches and the other underwent arcuate keratotomy. In the first group the mean preoperative astigmatism was -4.36 -/+ 2.2 D. which is reduced to -1.63 -/+ 1.32 D. with significant increase of uncorrected VIA from 0.14 +/- 0.12 to 0.39 +/- 0.16 and best corrected VIA from 0.32 +/- 0.17 to 0.72 +/- 0.2. In the second group the mean preoperative astigmatism was -3.67 +/- 0.93 which is significantly reduced to- 0.99 +/- 0.53 with significant increase in the uncorrected VIA from 0.12 +/- 0.72 to 0.28 +/- 0.13 and best corrected VIA from 0.32 +/- •• 0.12 to o:s +/- 0.19.