Comparison Between Swept Source Oct Keratometry And Scheimpflug Respectively Spectral Domain Oct Combined With Placido Disc Keratometry
Published 2023 - 41st Congress of the ESCRS
Reference: PO0437 | DOI: 10.82333/5w6j-bg02
Authors: Victoria Kauer* 1 , Oliver Findl 1 , Johannes Zeilinger 1 , Manuel Ruis 2 , Armin Motaabbed 1 , Martin Kronschläger 1
1Ophthalmologie,Hanusch ,Vienna,Austria, 2Ophthalmologie,VIROS,Vienna,Austria
Residual astigmatism after cataract surgery with toric IOLs remains a major problem, with preoperative measurement of the cornea being the main source of error. The aim of this study is to evaluate the repeatability of corneal astigmatism measurements between 4 different keratometry devices (IOL Master 700, Anterion OCT, Sirius, MS 39). In addition, the calculation of a tIOL is compared using the combination of the K values of the above devices with the IOL Master-700 values and the difference in astigmatism values between the Barrett and Haigis formulas.
prospective study
96 patients receiving binocular toric IOLs are included. Analysis is limited to IOL Master 700 vs Sirius and IOL Master 700 vs Anterion OCT vs MS 39. The comparability of the tIOL calculations is checked considering the pre- and postoperative refraction and the IOL position. The comparison between different IOL formulas is analyzed using the difference between the calculated predicted postoperative spherical equivalent and the astigmatism degree axis between the Barret and Haigis formulas.
The first results will be presented at the ÖOG in May.
The question of the comparability of 4 different devices for determining corneal astigmatism, as well as different calculation formulas for toric IOLs, could play an important role in avoiding residual astigmatism after cataract surgery.