A comparative clinical study of the visual results between three types of multifocal lenses.

PURPOSE: To compare the patients' visual results after bilateral implantation of the multifocal intraocular lenses (MIOLs): ReZoom (NXG1, Abbott Medical Optics, Abbott Park, IL, USA), Acrysof ReSTOR (SA60D3, Alcon Laboratories, Fort Worth, TX, USA) and Tecnis MF (ZM900, Abbott Medical Optics).
MATERIALS AND METHODS: A prospective, nonrandomized, comparative trial of 30 patients (60 eyes) aged 46-71 (mean age 56.3 +/- 5.96) divided into three equal groups with implanted bilaterally multifocal lenses: ReZoom IOL, Acrysof ReSTOR IOL and Tecnis MF IOL. The patient selection criteria included no other eye disease besides cataract, and corneal astigmatism of 1.5 diopters or less. In each case, the patients were scheduled to have standard phacoemulsification surgery with IOL implantation into the bag. The postoperative target was emmetropia. The mean follow-up was 6 months in all eyes. The following parameters were assessed/carried out: slit-lamp examination, uncorrected and best spectacle-corrected far and near visual acuity, autorefractometry, intraocular pressure, contrast sensitivity and subjective satisfaction with vision using the VF-14 survey.
RESULTS: After surgery, all eyes were within +/-2.0D of target refraction. The mean uncorrected distance visual acuity improved in all cases. The postoperative BCDVA was better than 20/30 at the sixth month in all eyes. Six months postoperatively, the mean uncorrected distance visual acuity (UCDVA) +/- standard error (SE) in the ReZoom, ReSTOR and Tecnis MF groups was 0.11 +/- 0.01, 0.17 +/- 0.02 and 0.14 +/- 0.02 (LogMAR) respectively. All results were significantly better compared to preoperative values (p < 0.001) but did not differ between the study groups (p > 0.05). At the final visit, 75% of eyes in the ReZoom group achieved J1 (Jaeger standard) in comparison to 85% in the ReSTOR and Tecnis MF groups. Eighty percent of patients with bilaterally implanted ReSTOR and Tecnis MF IOL were spectacle-independent, in comparison to 70% with implanted ReZoom IOL. Thirty percent of patients with implanted Rezoom and Acrysof Restor IOL and 20% with implanted Tecnis multifocal IOL reported little or moderate halo and glare. The patients' satisfaction after the procedure was excellent; the scoring on the VF-14 survey ranged from 70-100%, with an average of 93%. No patient was dissatisfied with the results of the surgery.
CONCLUSIONS: The implantation of tested multifocal intraocular lenses provides good near and distance visual acuity. We did not observe any statistically significant differences between the tested multifocal intraocular lenses with regard to best-corrected distance visual acuity, presence of glare and halo, as well as satisfaction with vision.