Outcome of Toric Intraocular Lens Implanted in Eyes with Previous LASIK/PRK | ASCRS
Presentation
Outcome of Toric Intraocular Lens Implanted in Eyes with Previous LASIK/PRK
May 2020
Meeting: 2020 Virtual Annual Meeting
Session: SPS-110 Post Refractive Surgery - IOL Calculations
Authors: Li Wang, MD, PhD, Danmin Cao MD, Douglas Koch MD
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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.
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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.

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