Corneal steepening with final suture removal after penetrating keratoplasty

W. D. Mathers, J. B. Gold, H. Kattan, M. A. Lemp

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We reviewed 53 patients after they underwent penetrating keratoplasty, comparing the change in average corneal curvature before and after final suture removal 15-18 months postsurgery. In 29 eyes with keratoconus, there was a significant increase in average curvature of 3.48 diopters ± 3.76 (p < 0.0005). In 24 eyes with other diagnoses, there was also a significant increase in the average curvature of 3.26 diopters ± 3.98, (p < 0.0005). The difference between these groups was not significant. The amount of steepening correlated negatively (-.6494) with the average corneal curvature before suture removal (p < 0.005). We found no change in the average astigmatism after suture removal; however, large changes in astigmatism occurred unpredictably with some patients. This study shows that corneal curvature after penetrating keratoplasty steepens after suture removal, particularly in flat corneas, and astigmatism may shift unpredictably.

Original languageEnglish (US)
Pages (from-to)221-223
Number of pages3
Issue number3
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Ophthalmology


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