Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Three-year follow-up of post presbyLASIK corneal multifocality through an objective method based on wavefront propagation simulation

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Session Details

Session Title: Presented Poster Session: Presbyopia

Session Date/Time: Tuesday 13/09/2016 | 09:30-11:00

Paper Time: 10:10

Venue: Poster Village: Pod 2

First Author: : A.Renna SPAIN

Co Author(s): :    A. Villanueva   D. Mas   J. Alio        

Abstract Details


The purpose of this study was to analyse corneal multifocality generated by Presbylasik central surgery and assess post-operative results stability for a period up to of three years.


University of Alicante, Alicante; Vissum Alicante, Spain


This study included 24 eyes of 12 patients divided into two groups; 12 presbyopic myopic and 12 presbyopic hyperopic. All patients were surgically treated with central Presbylasik. Topographic measurements were conducted before the surgery and three-month, one-year and three-years after surgery. Patients’ mean age at the time of surgery was 50. Mean postoperative spherical equivalent refraction was (-0,31 ± 0,74 dioptres D) in the hyperopic group and (-0,50 ± 0,40 D) in the myopic group. With the purpose of objective analysis of corneal multifocality, a computer tool was used based on Fresnel wavefront propagation algorithm calculated from the corneal transmittance


In the hyperopic group, postoperative corneal depth of focus (DoF) was 1,55±0,45 D. At 3 year postoperatively, corneal DOF variation was 0,08±0,38 D. In the myopic group, , postoperative corneal depth of focus (DoF) was 1,93±0,25 D. At 3 year postoperatively, corneal DOF variation was 0,36±0,22 D.


Through the purely objective analysis of the cornea’s surface, it was established that the Presbylasik central technique generates an increase in corneal multifocality in the myopic group, and to a lesser extent, in the hyperopic group. Great stability of corneal DoF is observed in both groups, slightly lower in the myopic group.

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