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Optical coherence tomography measurements with two types of diffractive multifocal intraocular lenses

Session Details

Session Title: Refractive

Session Date/Time: Sunday 16/02/2014 | 08:30-11:00

Paper Time: 10:30

Venue: Kosovel Hall (Level -2)

First Author: : ArnaldoSantos PORTUGAL

Co Author(s): :    André Vicente   Rita Anjos   Joana Ferreira   João Paulo Cunha     

Abstract Details

Purpose:

Multifocal intraocular lenses (MF-IOLs) have concentric optical zones with different dioptric power, enabling patients to have good visual acuity at multiple focal points. However, it has been reported that this particular design has the potencial to distort the light beam emitted by the optical coherence tomography (OCT) device, thereby creating wavy horizontal artifacts in the retinal images of this patients. This study aims to compare retinal OCT measurements in patients with two different types of diffractive MF-IOLs with a control group with monofocal aspheric IOLs.

Setting:

Cross-sectional study conducted in the Refractive Surgery Department of Central Lisbon Hospital Center.

Methods:

Spectral domain OCT with Heidelberg Spectralis was performed in two study groups: group 1 – 21 eyes of twelve patients with diffractive multifocal IOL and group 2 – 24 eyes of fifteen patients with monofocal aspheric IOL. Patients with diabetes, corneal and retinal pathologies or optic neuropathy were excluded from the study. Macular thickness map was obtained with the automatic software of this device. Patients in group 1 had been implanted with AcrySof ReSTOR SA60D3 and Tecnis Multifocal ZMB00. Patients in group 2 had been implanted with Acrysof IQ SN60WF and Tecnis ZCB00.

Results:

In group 1, the mean visual acuity was 0.97 ±0.08 and in group 2 it was 0.94 ±0.11 (p > 0.05). There were no statistically significant differences in retinal thickness between both groups in any of the zones of the OCT macular map (p > 0.05).

Conclusions:

The incidence of retinal diseases in patients with previously implanted MF-IOLs will probably rise given the increasing popularity of this type of lenses. In this group of patients, the OCT will continue to be an accurate and reliable method to study retinal morphology and to make retinal measurements. FINANCIAL INTEREST: NONE