Evaluation of Different Power of Near Addition in Two Different Multifocal Intraocular Lenses

Abstract

Purpose. To compare near, intermediate, and distance vision and quality of vision, when refractive rotational multifocal intraocular lenses with 3.0 diopters or diffractive multifocal intraocular lenses with 2.5 diopters near addition are implanted. Methods. 41 eyes of 41 patients in whom rotational +3.0 diopters near addition IOLs were implanted and 30 eyes of 30 patients in whom diffractive +2.5 diopters near addition IOLs were implanted after cataract surgery were reviewed. Uncorrected and corrected distance visual acuity, intermediate visual acuity, near visual acuity, and patient satisfaction were evaluated 6 months later. Results. The corrected and uncorrected distance visual acuity were the same between both groups (p = 0.50 and p = 0.509, resp.). The uncorrected intermediate and corrected intermediate and near vision acuities were better in the +2.5 near vision added intraocular lens implanted group (p = 0.049, p = 0.005, and p = 0.001, resp.) and the uncorrected near vision acuity was better in the +3.0 near vision added intraocular lens implanted group (p = 0.001). The patient satisfactions of both groups were similar. Conclusion. The +2.5 diopters near addition could be a better choice in younger patients with more distance and intermediate visual requirements (driving, outdoor activities), whereas the + 3.0 diopters should be considered for patients with more near vision correction (reading).

Comparison of preoperative angle kappa measurements in the eyes of cataract patients obtained from Pentacam Scheimpflug system, optical low-coherence reflectometry, and ray-tracing aberrometry

“…The larger the discrepancy between the visual axis and pupillary axis or visual axis and optical axis is, the lower the visual quality. In the MIOL of eyes with a large angle kappa, the light might pass the center of the macula through other diffractive rings instead of the central area of the MIOL, which is also known as functional IOL decentration [ 12 ], thereby leading to photic phenomena and surgical aberrations [ 13 , 14 ]. Therefore, according to the angle kappa, adjusting the position of the MIOL may help reduce photic phenomena [ 13 , 15 ].…”

Comparison of Preoperative Angle Kappa Measurements in the Eyes of Cataract Patients Obtained from Pentacam Scheimpflug System, Optical Low-Coherence Reflectometry, and Ray-Tracing Aberrometry

“…The larger the discrepancy between the visual axis and pupillary axis or visual axis and optical axis is, which decreased the visual quality. In the MIOLs of eyes with a large angle kappa, the light might pass the center of the macula through other diffractive rings instead of the central area of the MIOLs, which is also known as functional IOL decentration [10], thereby leading to the photic phenomena and surgical aberrations [11,12]. Therefore, according to the angle kappa, adjusting the position of the MIOLs may help reduce photic phenomena [11,13].…”

Clinical Results of Diffractive, Refractive, Hybrid Multifocal, and Monofocal Intraocular Lenses

“…Cumulative UNVA of 20/25 or better (in Snellen) was achieved by 37.4% of our patients and by 40.4% of Piovella's patients [ 6 ]. Diffractive IOL performed better in UNVA, as it has higher addition (+4.0 D) [ 37 ]. Moreover, in the hybrid lens, intermediate focus is potentiated at the expense of near focus.…”