Prospective, randomized vector analysis of astigmatism after three-, one-, and no-suture phacoemulsification

D. T. Azar, W. J. Stark, J. Dodick, J. M. Khoury, S. Vitale, C. Enger, C. Reed

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Purpose: To compare surgically induced astigmatism and visual outcomes after three-, one-, and no-suture phacoemulsification. Setting: Johns Hopkins Hospital, Baltimore, Maryland, and Manhattan Eye, Ear, and Throat Hospital, New York, New York, USA. Methods: This prospective, randomized study followed 131 patients treated with phacoemulsification with a 5.5 mm self-sealing scleral tunnel and implantation of a 5.5 mm poly(methyl methacrylate) posterior chamber lens. Radial 10-0 nylon sutures were used in the three- and one-suture groups. Results: Mean astigmatism was greatest in the first postoperative week in all groups and stabilized after 8 weeks. The percentage of patients with-the-rule (WTR) astigmatism increased from baseline in the one- and three-suture groups and decreased in the sutureless group. Mean uncorrected Snellen acuity was significantly better in the no- and one- suture groups than in the three-suture group at 1 week. There were no significant differences in uncorrected acuity at other times. No statistically significant differences in the surgically induced spherical equivalent were noted among the three groups during the 1 year follow-up. There was significantly less surgically induced keratometric astigmatism in the one-suture group at 4 (P = .03) and 8 (P = .007) weeks postoperatively. At all follow-ups, the sutureless group had the greatest proportion of patients with significant ATR astigmatic shift (1 week, 17%; 4 weeks, 32%), and the lowest proportion of patients with significant WTR astigmatic shift (10% after 1 week). At 4 weeks, the percentage of patients with significant WTR shift in the one-suture group dropped to that in the sutureless group (10%); however, those in the one-suture group had less ATR astigmatic shift (16%). Conclusion: Sutureless and one-suture surgery resulted in a low percentage of WTR induced astigmatism 4 weeks postoperatively. Compared with sutureless surgery, the one-suture surgery resulted in less ATR shift.

Original languageEnglish (US)
Pages (from-to)1164-1173
Number of pages10
JournalJournal of cataract and refractive surgery
Issue number8
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Ophthalmology
  • Sensory Systems


Dive into the research topics of 'Prospective, randomized vector analysis of astigmatism after three-, one-, and no-suture phacoemulsification'. Together they form a unique fingerprint.

Cite this