Official ESCRS | European Society of Cataract & Refractive Surgeons
Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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The influence of cataract severity and monofocal pseudophakia on wavefront measured depth-of-field

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Session Details

Session Title: Ocular Surface & Quality of Vision

Session Date/Time: Monday 24/09/2018 | 14:00-16:00

Paper Time: 15:30

Venue: Room A3, Podium 1

First Author: : M.Mahr USA

Co Author(s): :    J. Erie                    

Abstract Details


To determine the influence of both cataract severity and pseudophakia on patient depth of field as calculated by the wavefront measured Visual Strehl ratio Optical Transfer Function (50%VSOTF).


Mayo Clinic Department of Ophthalmology - Rochester, MN USA


Ray-tracing wavefront aberrometry iTrace (Tracey Technologies; Houston, Texas USA) measurements including the 50%VSOTF depth of field (DOF) were recorded for 6,957 eyes in a cataract surgery patient population from 2014-7. Data were deidentified, exported, and analyzed using R and RStudio.


Eyes with no recorded cataract surgery event had a mean DOF of 1.81 diopters (D) which was positively correlated with measures of cataract severity including both lens opacity and the dysfunctional lens index (p<0.01). Monofocal IOL (Alcon SA60AT) cataract surgery eyes had a mean DOF of 2.56 D pre-op versus 1.32 D post-op (p<0.01; 95% CI for difference 1.17,1.32 D).


In phakic eyes wavefront measured 50%VSOTF depth of field is positively associated with measures of increasing cataract severity. Monofocal IOL pseudophakia results in a significant decrease in depth of field relative to pre-op phakic patients.

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