Visual outcomes of the diffractive multifocal intraocular lens - Zeiss AT Lisa 809M^TM

Purpose:

To evaluate the visual function of patients with bilateral implantation of multifocal diffractive IOL AT Lisa 809M^TM by visual acuity with and without correction, contrast sensitivity curve, defocus curve and visual function questionnaire (39 VQF).

Methods:

Interventional clinical prospective study, which evaluated the results of 20 eyes of 10 patients who underwent phacoemulsification and IOL implantation between february and june 2012.

Results:

The average of residual postoperative ametropia was 0.05 ± 0.42 (-0.75 to +1.25 D) spherical diopters and -0.30 ± 0.42 (0 to -1.25 D) cylindrical diopters. In the mono and binocular defocus curve, the best visual acuity was obtained with 0.00 D of defocus (far VA). The second peak was obtained with -3.00 D (near vision at 33 cm) and among these peaks, it was observed a loss of visual performance with -2.00 D, which corresponds to intermediate vision at 50 cm. Contrast sensitivity was similar to those reported in the literature with this type of IOL, both with and without glare, and is shown in the figures. The visual function questionnaire (VFQ-39) had a mean value of 91.91 + - 6.82.

Conclusion:

The diffractive multifocal IOL-AT LISA 809M presented results consistent with the literature as measured by tests of visual acuity with and without optical correction, contrast sensitivity curve, defocus curve and visual function questionnaire (39 VQF).

Cataract; Lens implantation, intraocular; Eyeglasses; Visual acuity; Contrast sensitivity; Questionnaires; Treatment outcome