Clinical and Optical Intraocular Performance of Rotationally Asymmetric Multifocal IOL Plate-Haptic Design Versus C-Loop Haptic Design

Abstract

PURPOSE: To compare the visual and intraocular optical quality outcomes with different designs of the refractive rotationally asymmetric multifocal intraocular lens (MFIOL) (Lentis Mplus; Oculentis GmbH, Berlin, Germany) with or without capsular tension ring (CTR) implantation. METHODS: One hundred thirty-five consecutive eyes of 78 patients with cataract (ages 36 to 82 years) were divided into three groups: 43 eyes implanted with the C-Loop haptic design without CTR (C-Loop haptic only group); 47 eyes implanted with the C-Loop haptic design with CTR (C-Loop haptic with CTR group); and 45 eyes implanted with the plate-haptic design (plate-haptic group). Visual acuity, contrast sensitivity, defocus curve, and ocular and intraocular optical quality were evaluated at 3 months postoperatively. RESULTS: Significant differences in the postoperative sphere were found ( P = .01), with a more myopic postoperative refraction for the C-Loop haptic only group. No significant differences were detected in photopic and scotopic contrast sensitivity among groups ( P ⩾ .05). Significantly better visual acuities were present in the C-Loop haptic with CTR group for the defocus levels of −2.0, −1.5, −1.0, and −0.50 D ( P ⩽.03). Statistically significant differences among groups were found in total intraocular root mean square (RMS), high-order intraocular RMS, and intraocular coma-like RMS aberrations ( P ⩽.04), with lower values from the plate-haptic group. CONCLUSIONS: The plate-haptic design and the C-Loop haptic design with CTR implantation both allow good visual rehabilitation. However, better refractive predictability and intraocular optical quality was obtained with the plate-haptic design without CTR implantation. The plate-haptic design seems to be a better design to support rotational asymmetric MFIOL optics. [ J Refract Surg. 2013;29(4):252–259.]