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LASIK improves uncorrected near visual acuity after multifocal IOL implantation

J Cataract Refract Surg. 2009;35(6):1063-1071.

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LASIK proved safe and effective in correcting residual refractive error after apodized diffractive multifocal IOL implantation, a study showed.

"There was no significant difference in visual outcomes between ... eyes that had wavefront-guided treatment with iris registration and eyes that had conventional excimer laser correction, or between eyes that had cataract extraction and eyes that had [refractive lens exchange]," the study authors said.

The retrospective study included 85 eyes of 59 patients who underwent LASIK after receiving the AcrySof ReSTOR IOL (Alcon). Mean patient age was 61 years. The mean period between IOL implantation and LASIK correction was 7.8 months.

Surgeons used the IntraLase FS 60 kHz femtosecond laser (Abbott Medical Optics) to create LASIK flaps and the Visx STAR S4 excimer laser (AMO) to perform ablation. Thirty-six eyes underwent myopic correction, 35 eyes underwent mixed astigmatic correction and 14 eyes had hyperopic correction; 72 eyes had conventional ablation and 13 eyes had wavefront-guided ablation with iris registration.

Forty-five eyes also underwent nd:YAG capsulotomy. Investigators conducted follow-up exams at 1, 3 and 6 months.

Study data showed that at 6-months postop, 91.8% of eyes had uncorrected distance visual acuity of 20/25 or better; 92.9% had uncorrected near visual acuity of J1 or better; 85.9% had uncorrected distance visual acuity of 20/25 or better and near UCVA of J1 or better. Results also showed that 99% of eyes were within 1 D of emmetropia, the authors said.