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Filed Under
Cataract
Astigmatism
Refractive
post-refractive surgery
astigmatism management
astigmatism-correcting IOL
toric IOL
2020 paper presentation
Purpose
To evaluate the outcome of toric intraocular lens (IOL) implantation in eyes with previous LASIK/PRK.
Methods
Retrospectively, we reviewed consecutive cases that had previous myopic or hyperopic LASIK/PRK and had undergone cataract surgery with toric IOL implantation. We included eyes that had: 1) preoperative ocular biometry measurements with the Lenstar, 2) no intraoperative or postoperative complications, and 3) available postoperative manifest refraction at 3 weeks or longer with best-corrected visual acuity of 20/30 or better. Vector analysis was used to assess the preoperative corneal and postoperative refractive astigmatism.
Results
In 56 eyes with previous myopic LASIK/PRK and 19 eyes with previous hyperopic LASIK/PRK, respectively, the mean magnitudes of corneal astigmatism were 1.34 ± 0.62 D and 1.66 ± 0.80 D, 5% and 0% of eyes had anterior corneal astigmatism 0.5 D or less, and the centroid values were 0.31 D @ 19 degrees ± 1.45 D and 0.74 D @ 92 degrees ± 1.72 D preoperatively. Postoperatively, the mean magnitudes of refractive astigmatism were 0.36 ± 0.31 D and 0.34 ± 0.34 D, 80% and 84% of eyes had refractive astigmatism 0.5 D or less, and the centroid values were 0.12 D @ 152 degrees ± 0.46 D and 0.05 D @ 172 degrees ± 0.48 D (all P<0.05).
Conclusion
Toric IOLs are effective to correct preexisting corneal astigmatism in eyes with previous excimer laser corneal refractive surgery.
To evaluate the outcome of toric intraocular lens (IOL) implantation in eyes with previous LASIK/PRK.
Methods
Retrospectively, we reviewed consecutive cases that had previous myopic or hyperopic LASIK/PRK and had undergone cataract surgery with toric IOL implantation. We included eyes that had: 1) preoperative ocular biometry measurements with the Lenstar, 2) no intraoperative or postoperative complications, and 3) available postoperative manifest refraction at 3 weeks or longer with best-corrected visual acuity of 20/30 or better. Vector analysis was used to assess the preoperative corneal and postoperative refractive astigmatism.
Results
In 56 eyes with previous myopic LASIK/PRK and 19 eyes with previous hyperopic LASIK/PRK, respectively, the mean magnitudes of corneal astigmatism were 1.34 ± 0.62 D and 1.66 ± 0.80 D, 5% and 0% of eyes had anterior corneal astigmatism 0.5 D or less, and the centroid values were 0.31 D @ 19 degrees ± 1.45 D and 0.74 D @ 92 degrees ± 1.72 D preoperatively. Postoperatively, the mean magnitudes of refractive astigmatism were 0.36 ± 0.31 D and 0.34 ± 0.34 D, 80% and 84% of eyes had refractive astigmatism 0.5 D or less, and the centroid values were 0.12 D @ 152 degrees ± 0.46 D and 0.05 D @ 172 degrees ± 0.48 D (all P<0.05).
Conclusion
Toric IOLs are effective to correct preexisting corneal astigmatism in eyes with previous excimer laser corneal refractive surgery.
View More Presentations from this Session
This presentation is from the session "SPS-110 Post Refractive Surgery - IOL Calculations" from the 2020 ASCRS Virtual Annual Meeting held on May 16-17, 2020.