Comparability and reproducibility of six optical biometry devices

Session Details

Session Title: Cataract Surgery Equipment. Cataract Surgery Outcomes

Session Date/Time: Monday 07/09/2015 | 16:30-18:30

Paper Time: 16:42

Venue: Main Auditorium

First Author: : R.Varsits AUSTRIA

Co Author(s): :    N. Hirnschall   P. Nguyen   B. Doeller   S. Schuschitz   O. Findl        

Abstract Details

Purpose:

To assess the differences and the reproducibility of six different biometry devices in eyes with moderate to dense cataract.

Setting:

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

Methods:

This prospective study included phakic eyes with moderate to dense cataract. Six different optical biometers were compared (AL-Scan, Nidek Co. LTD.; Aladdin, Topcon Europe Medical B.V.; Galilei G6, Ziemer Ophthalmic Systems AG; IOL – Master 700, Carl Zeiss Meditec AG; Lenstar LS900, Haag-Streit Diagnostics; OA-2000, Tomey GmbH;) Each patient was measured three times by one examiner. The order of the devices and the examiner for each patient was assigned randomly. Additionally to assessing axial eye length, anterior chamber depth, corneal radii and lens thickness, the duration of data entry, measurement time and analysis time were evaluated.

Results:

In total, 50 eyes of 50 patients were included. For 3 patients the measurements of axial length showed the following results (mean and standard deviation): AL-Scan: 24.30mm (SD: 0.20mm); Aladdin: 24.32mm (SD: 0.22); Galilei G6: 24.30 (SD: 0.20mm); IOL-700: 24.34 (SD: 0.20mm); Lenstar: 24.32mm (SD: 0.21mm); OA-2000: 24.30mm (SD: 0.20mm). Details and further results will be presented at the meeting.

Conclusions:

Feasibility was found to be high for all devices, but there were differences between the devices in the handling, the data entry, the measurement process and after all the results. Some patients with a dense cataract only could be measured at on certain devices.

Financial Interest:

NONE