Effects of Bifocal versus Trifocal Diffractive Intraocular Lens Implantation on Visual Quality after Cataract Surgery
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Purpose: To compare the effects of bifocal versus trifocal diffractive intraocular lens (IOL) implantation on visualquality after phacoemulsification in patients with cataracts. Methods: Eighty-eight eyes from 63 patients were analyzed. Trifocal (AT LISA tri 839MP), bifocal (AcrySof IQReSTOR) and bifocal (Tecnis MF ZLB00) IOLs were implanted into 53, 18, and 17 eyes, respectively. Uncorrecteddistance, intermediate and near visual acuity, refractive errors, contrast sensitivity, and patient satisfactionwere measured at 1 week and 1 month after surgery. Refractive error was converted to a spherical equivalentand compared to predicted refraction calculated by IOL calculation formulas. Results: Uncorrected distance, intermediate, and near visual acuity did not differ significantly between groups. One month after surgery, the mean refractive errors were -0.07 diopters (D) in the AT LISA tri 839MP group,+0.18 D in the AcrySof IQ ReSTOR group, and +0.31 D in the Tecnis MF ZLB00 group (p < 0.001). The predictiveaccuracy of IOL calculation formulas did not differ between groups. Contrast sensitivity, satisfaction, andspectacle independence in the trifocal group were comparable with those of the two bifocal groups. Conclusions: Trifocal IOL and two different types of bifocal IOL implantation were all effective for improving visualquality, although refractive error in patients with trifocal IOL shows myopic tendencies.
Abstract
Purpose: To compare the effects of bifocal versus trifocal diffractive intraocular lens (IOL) implantation on visualquality after phacoemulsification in patients with cataracts. Methods: Eighty-eight eyes from 63 patients were analyzed. Trifocal (AT LISA tri 839MP), bifocal (AcrySof IQReSTOR) and bifocal (Tecnis MF ZLB00) IOLs were implanted into 53, 18, and 17 eyes, respectively. Uncorrecteddistance, intermediate and near visual acuity, refractive errors, contrast sensitivity, and patient satisfactionwere measured at 1 week and 1 month after surgery. Refractive error was converted to a spherical equivalentand compared to predicted refraction calculated by IOL calculation formulas. Results: Uncorrected distance, intermediate, and near visual acuity did not differ significantly between groups. One month after surgery, the mean refractive errors were -0.07 diopters (D) in the AT LISA tri 839MP group,+0.18 D in the AcrySof IQ ReSTOR group, and +0.31 D in the Tecnis MF ZLB00 group (p < 0.001). The predictiveaccuracy of IOL calculation formulas did not differ between groups. Contrast sensitivity, satisfaction, andspectacle independence in the trifocal group were comparable with those of the two bifocal groups. Conclusions: Trifocal IOL and two different types of bifocal IOL implantation were all effective for improving visualquality, although refractive error in patients with trifocal IOL shows myopic tendencies.
참고문헌 (35)
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