Pre-surgical visual simulations of real multifocal lenses with different optical methods

Session Details

Session Title: Pseudophakic IOLs: Multifocal II

Session Date/Time: Sunday 08/10/2017 | 10:30-12:30

Paper Time: 11:16

Venue: Room 2.1

First Author: : C.Dorronsoro SPAIN

Co Author(s): :    M. Vinas   C. Benedi   S. Aissati   V. Akondi   S. Marcos        

Abstract Details

Purpose:

To compare through-focus (TF) optical & visual quality produced by real multifocal intraocular lenses (trifocal diffractive –TriD, FineVision, Physiol- and bifocal non-rotationally symmetric refractive –BiR, Oculentis-), with visual simulations using a Spatial Light Modulator (SLM) and temporal multiplexing with optotunable lenses (SimVis) in an Adaptive Optics Visual Simulator (AO).

Setting:

Visual Optics and Biophotonics Laboratory, IO-CSIC, Madrid, Spain

Methods:

Two physical 0-Diopter TriD and BiR IOLs were projected on the eye’s pupil, using a custom AO-system. TriD and BiR were also mapped in the SLM (as a spatial phase map) and on SimVis (as a temporal profile). TF double pass retinal images were collected, and image correlation used as a metric to compare real lenses, SLM & SimVis. TF visual acuity (VA) was also obtained on 5 cyclopleged subjects and on presbyopic patients scheduled for refractive lens exchange with implantation of TriD IOLs. TF quality curves were statistically compared with the real IOL as a reference.

Results:

TF image correlation from on-bench measurements were 0.91/0.95/0.97@far & 0.48/0.36/0.75@+3.00D for BIR, and 0.94/0.90/0.99@far & 0.27/0.33/0.32@+3.50D for TriD for Real IOL/SimVis/SLM simulations. TF double-pass curves showed maximum values within 0.25 D for SLM and 0.50 D for SimVis. TF Visual Acuity curves (5 D range) in patients showed great individual similarity across simulations. Average RMS difference from Real IOL and simulated TF curves was 1.14 for BiR & 0.84 for TriD for SimVis, and 1.93 for BiR & 1.49 for TriD for SLM. VA values correlated highly between Real IOLs and SimVis (r=0.71 & r=0.46;p<0.05 across subjects, BiR and TriD).

Conclusions:

The optical and visual performance obtained with real IOLs, both the absolute values and the shape of the TF curves, is captured to a large extent with visual simulations performed in an AO system on the same individual patients. Visual Simulators are useful programmable tools to predict visual performance with multifocal IOLs.

Financial Disclosure:

has significant investment interest in a company producing, developing or supplying product or procedure presented, receives nonNONEmonetary benefits from a company producing, developing or supplying the product or procedure presented.