Official ESCRS | European Society of Cataract & Refractive Surgeons
London 2014 Registration Visa Letters Programme Satellite Meetings Glaucoma Day 2014 Exhibition Hotel Booking Virtual Exhibition Star Alliance
london escrs

Course handouts are now available
Click here

Come to London


WATCH to find out why

Site updates:

Programme Updates. Programme Overview and - Video Symposium on Challenging Cases now available.


Search Abstracts by author or title
(results will display both Free Papers & Poster)

Comparative visual performance between an extended range of vision IOL and a trifocal IOL

Poster Details

First Author: A.Hamid UK

Co Author(s):    V. Patel   A. Sokwala           

Abstract Details


To determine the visual performance of a new extended range of vision IOL (AMO Symfony) and a trifocal IOL (Zeiss AT Lisa).


Optimax and Ultralase Eye Clinics


A comparison of visual performance was made between the two different IOLS with a monofocal IOL (AMO Tecnis) used as a control group. Surgery was performed by a single surgeon (AH). Each lens was bilaterally implanted in the eye of ten consecutive patients. Visual acuity, refraction, defocus curve and contrast sensitivity was measured at 1 week, 1 month and 3 months.


All patients achieved UCVA of 20/25 or better in both groups. 85% of patients achieved N6 or better in the Symfony group vs 74% in the AT Lisa Group. However while the defocus curve demonstrates 3 discrete points of focus for the AT Lisa Trifocal, the Symfony was able to maintain 20/20 visual acuity for up to 1.5D of defocus and 20/25 for up to 2.5D of defocus. The Symfony also had higher levels of Contrast sensitivity post op (1.2 log CS) compared to the AT Lisa Trifocal (0.91 log CS) and the AMO Tecnis Monofocal (1.17 log CS).


In this small study evaluating this new extended range of vision IOL we have found early results demonstrating superior visual performance in terms of visual acuity, range of vision (defocus) and contrast sensitivity.

Financial Disclosure:


Back to Poster listing