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Comparability and reproducibility of four wavefront aberrometers for measuring lower and higher order aberrations in pseudophakic eyes

Session Details

Session Title: Cataract 1
Session Date/Time: Friday 20/02/2015 | 10:30-12:30
Paper Time: 10:48
Venue: Sadirvan B
First Author: : P.Nguyen AUSTRIA
Co Author(s): :    N. Hirnschall   O. Findl   N. Luft        

Abstract Details

Purpose:

To compare measurements of lower and higher order aberrations (HOA) obtained with four different wavefront aberrometers and to assess their reproducibility

Setting:

Vienna Institute for Research in Ocular Surgery, Department of Ophthalmology, Hanusch Hospital, Vienna

Methods:

This prospective study included pseudophakic otherwise healthy patients. Four wavefront aberrometers were compared. Three of the aberrometers in this study are combined with coneal topographers. Two of the devices use a Hartmann-Shack sensor (WASCA, Carl Zeiss Meditec AG; iDesign Advanced WaveSan aberrometer, Abbott Medical Optics), one device works on the basis of ray tracing (iTrace, Tracey Technologies), one device utilizes automated retinoscopy (OPD-ScanIII; NIDEK Co. Ltd.). All patients are measured with an autorefractometer (Topcon, Japan) and also a subjective refraction has been performed. In addition a Purkinjemeter measurement has been done.

Results:

In total, 50 eyes of 50 patients will be included. No patient was lost to follow-up. Preliminary results show that mean difference concerning root mean square of all aberrations was between 0.14µm (SD: 0.17) between iTrace and iDesign and 0.42µm (SD: 0.55) between iTrace and Wasca, respectively. Reproducibility was found to be between 0.09 µm (SD:0.06) (iDesign) and 0.41µm (SD: 0.12) (iTrace), respectively. Details for higher order aberrations will be presented at the meeting.

Conclusions:

Feasibility was found to be high for all devices, but there were significant differences between the devices in some patients and reproducibility was found to be slightly better for the iDesign device.

Financial Disclosure:

NONE

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