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Prospective, randomized vector analysis of astigmatism after three-, one-, and no-suture phacoemulsification
D T Azar1, W J Stark, J Dodick
1Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland, USA.
Journal of Cataract and Refractive Surgery
|November 22, 1997
Summary
Sutureless and one-suture cataract surgery reduce surgically induced astigmatism compared to three-suture techniques. One-suture surgery offers less against-the-rule astigmatism than sutureless approaches.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Corneal Astigmatism
Background:
- Phacoemulsification is a common cataract surgery technique.
- Managing surgically induced astigmatism is crucial for visual outcomes.
- Suture techniques can influence postoperative astigmatism and visual acuity.
Purpose of the Study:
- To compare surgically induced astigmatism and visual outcomes.
- Evaluate three-, one-, and no-suture phacoemulsification techniques.
- Determine the impact of suture number on refractive error and vision.
Main Methods:
- Prospective, randomized study of 131 patients undergoing phacoemulsification.
- Comparison of three-suture, one-suture, and sutureless techniques.
- Standardized scleral tunnel and intraocular lens implantation used across groups.
Main Results:
- Astigmatism stabilized by 8 weeks postoperatively in all groups.
- Sutureless and one-suture groups showed better uncorrected acuity at 1 week.
- One-suture group had less surgically induced keratometric astigmatism at 4 and 8 weeks.
- Sutureless group had a higher proportion of against-the-rule astigmatism shifts.
Conclusions:
- Sutureless and one-suture phacoemulsification yield low with-the-rule astigmatism.
- One-suture surgery demonstrates a reduced against-the-rule astigmatic shift compared to sutureless.
- Both sutureless and one-suture approaches offer favorable visual outcomes.