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Monocular peripheral presbyLASIK improves visual acuity, enables spectacle independence
J Refract Surg. 2009;25(6):516-523.
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Monocular peripheral presbyLASIK appeared viable for presbyopic patients undergoing refractive surgery, a study showed.
Investigators set out to evaluate presbyopia treatment involving monocular peripheral presbyLASIK on the nondominant eye with distance-directed monofocal refractive surgery on the dominant eye.
The study included 103 patients who underwent treatment with the Visx STAR S4 excimer laser (Abbott Medical Optics). Patients had a mean age of 53.3 years. Refraction before surgery ranged from –9.75 D to +2.75 D. Nondominant eyes underwent peripheral presbyLASIK. Dominant eyes underwent monofocal refraction-based LASIK, wavefront-guided LASIK, limbal relaxing incisions or no treatment.
Mean follow-up was 27.4 months (range, 1.1 years to 3.9 years).
Study data showed that 91.3% of all patients, 89% of hyperopes and 92% of myopes reported total spectacle independence at final follow-up; 7.8% wore spectacles for less than 1 hour weekly. Distance unaided visual acuity was 20/20 or better in 67.9% of hyperopes and 70.7% of myopes.
“PresbyLASIK increased overall higher-order aberrations similarly to refraction-based LASIK for myopes but to a greater extent in hyperopic cases,” the study authors said. “PresbyLASIK Wave-Scan spherical equivalent refraction was stable in myopes but mitigated an average of +0.31 D in hyperopes over the follow-up period.”