Comparison of Clinical Outcomes between Laser Blended Vision and Monovision Laser Refractive Surgery for Presbyopia

ABSTRACT

PURPOSE: To compare the efficacy and safety of Laser Blended Vision (LBV) and monovision laser refractive surgery (monovision) for presbyopia correction in patients with myopia. METHODS: This retrospective comparative study included 42 eyes of 21 patients with LBV and 50 eyes of 25 patients with monovision. Monocular and binocular distance, intermediate and near visual acuity, and refractive changes were evaluated preoperatively and 3 months after the surgery and compared. The patients in the LBV group underwent further evaluation of spherical aberration 3 months after the surgery and treatment satisfaction 3-6 months after the surgery. RESULTS: The mean age of the patients was 47.9 years in the LBV group and 41.7 years in the monovision group. Three months after surgery, the spherical equivalents were +0.11 ± 0.17 D in the dominant eye and -1.52 ± 0.36 D in the non-dominant eye in the LBV group. In contrast, the spherical equivalents were +0.23 ± 0.26 D in the dominant eye and -0.82 ± 0.28 D in the non-dominant eye in the monovision group. All patients achieved a binocular uncorrected distance visual acuity of 0.10 (log MAR) or better, and 86% of the LBV group and 100% of the monovision group achieved a binocular uncorrected intermediate visual acuity of better than 0.10. Moreover, 95% of the LBV group and 100% of the monovision group achieved a binocular uncorrected near visual acuity of better than 0.18. In the LBV group, mean spherical aberration increased after surgery than before, but it was not statistically significant. Complications such as corneal opacity that could decrease visual acuity were absent in both groups. Overall patient satisfaction after surgery was 80% in the LBV group. CONCLUSIONS: Despite the relatively higher mean age of the LBV group, both groups showed similar results regarding presbyopia correction in patients with myopia.