Posters

Repeatability and agreement of essential parameters for IOL power calculation from two optical biometers

Poster Details

First Author: J.Weindler GERMANY

Co Author(s):    J. Usinger   D. Scharf   I. Baur   P. Poompokawat   R. Khoramnia   G. Auffarth     

Abstract Details

Purpose:

Precise and repeatable measurement of the cornea, anterior chamber and axial length are essential for IOL power calculation. The purpose is to compare the biometry parameters from Pentacam AXL (P_AXL) (OCULUS Optikgeräte GmbH) and IOL Master 700 (IOL_M) (Carl Zeiss Meditec)

Setting:

Department of Ophthalmology-University of Heidelberg, Germany

Methods:

Prospective study of phakic, untouched eyes prior cataract surgery, no exclusion criteria, 3 consecutive, randomized measurements per eye with both devices. Only measurements with a good quality of the respective parameter were included as provided by the device. Agreement was assessed with Mean +/- SD and Bland Altman, Repeatability was assessed with Coefficient of Variation (CV).

Results:

Mean age: 63+/- 18 years; mean axial length (n=152) P_AXL: 23,44mm, CV=0,01, IOL_M: 23,5mm, CV=0,01:, corneal radii (n=98) P_AXL: 7,77mm, CV=0,2, IOL_M: 7,73mm, CV=0,2; anterior chamber depth (n=120) P_AXL: 3,51mm, CV=0,3, IOL_M: 3,28mm, CV=0,3; HWTW (n=96) P_AXL: 11,83mm, CV=0,3, IOL_M: 12,07mm, CV=0,6.

Conclusions:

Axial length, corneal radii, anterior chamber depth and HWTW showed comparable results. Repeatability was same or similar, except for HWTW.

Financial Disclosure:

research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, research is funded, fully or partially, by a competing company