Author: Irene Sisó Fuertes, University of Manchester
Nowadays diverse solutions to correct presbyopia are available in the market. Their main goal is to provide spectacle-free vision correction for the presbyopic population. One of the most accepted alternatives to correct presbyopia are contact lenses based on simultaneous vision – this is to say that both distance and near correction zones are allocated within the pupillary area providing simultaneous correction for both distances - but they only represent the 15% of the annual total fits. Therefore, studying their optical performance and interaction with accommodation provides better understanding and cues to improve current solutions for presbyopia correction and the number of people willing to adapt to them. Thus, we conducted a study to investigate the improvements achieved, if any, by the PureVision2 High add (Bausch & Lomb) bi-aspheric multifocal contact lens with respect to its predecessor PureVision High add. We did so in terms of visual acuity, accommodative response and ocular aberrations. This study has been accepted for poster presentation at the seventh annual conference of the European Academy of Optics and Optometry that will be held in Budapest, Hungary, 14-17 May 2015.