Visual simulations of presbyopic corrections through cataract opacification

Abstract

Purpose:To study the viability of visual simulation of presbyopic correction in patients with cataract and the effect and impact of the cataract on the perceived visual quality of the different simulated presbyopic corrections preoperatively and postoperatively.Setting:San Carlos Clinical Hospital, Madrid, Spain.Design:Observational, noninterventional, pilot study, early feasibility of the device being studied.Methods:Cataract patients were tested preoperatively (n = 24) and postoperatively (n = 15) after bilateral implantation of monofocal intraocular lenses (IOLs). The degree of cataract was evaluated objectively with the objective scatter index (OSI). Visual acuity (VA) and perceived visual quality of natural scene images (Multifocal Acceptance Score) were measured before and after cataract surgery at far (4 m), intermediate (64 cm) and near distance (40 cm) with 4 binocular presbyopic corrections (single vision, bifocal, monovision and modified-monovision) simulated with a binocular Simultaneous Vision simulator based on temporal multiplexing.Results:VA was significantly correlated with OSI (r = -0.71, P <5. The individual perceptual scores were highly correlated preoperatively vs postoperatively (r = 0.64, P