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Distribution of intraocular lens tilt and decentration and its influence on higher order aberrations

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Session Details

Session Title: Cataract Surgery Outcomes

Session Date/Time: Tuesday 16/09/2014 | 08:00-10:30

Paper Time: 09:20

Venue: Capital Hall A

First Author: : A.Prinz AUSTRIA

Co Author(s): :    N. Hirnschall   J. Tabernero   P. Artal   O. Findl     

Abstract Details


To show the distribution of tilt and decentration of intraocular lenses and its influence on higher order aberrations.


Dept. of Ophthalmology, Hanusch Hospital, Vienna, Austria


In this continuous cohort study, patients were included, who underwent cataract surgery 3 months prior to recruitment. A second measurement was performed 9 months later in a sub-group of patients. In all patients Purkinje meter measurements were performed using a novel modified Purkinje meter. This device is based on capturing and recording Purkinje images of a semicircular ring of LEDs. Additionally, Hartmann Shack sensor measurements (WASCA, Carl Zeiss Meditec AG, Germany) were performed at both follow-ups to assess higher order aberrations (HOAs).


In total, 350 eyes of 350 patients were included in this study. Mean age was 74.1 years (SD: 8.6, range: 44 to 91 years). Mean tilt and decentration of four different IOLs were 3.9° (SD: 2.3; range: 0.2 to 16.2) and 0.4mm (SD: 0.2; range: 0.0 to 1.7), respectively. Spherical aberration (mean: -0.20µm; SD: 0.43µm) was shown to have only a moderate correlation with tilt changes. A model explaining the influence of tilt and decentration on HOAs will be presented using the Atchison approach.


Although higher order aberrations correlate moderately with post-operative tilt changes, there were some cases with severe changes in higher order aberrations that could not be explained by post-operative tilt and decentration changes alone.

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