Mulitfocal IOL and intraoperative aberrometry: does it work?
Session Details
Session Title: Pseudophakic IOLs: Multifocal I
Session Date/Time: Sunday 08/10/2017 | 08:00-10:00
Paper Time: 09:26
Venue: Room 2.1
First Author: : A. Cantagalli ITALY
Co Author(s): : B. Foscarini T. Neuhann R. Neuhann P. Stodulka M. Tetz G. Auffarth
Abstract Details
Purpose:
Comparison of intraoperative aberrometry measurements of diffractive intraocular lenses (MIOL) with postoperative refraction. Factors are determined to correct the systematic deviations using the Abbott Tecnis® IOLs (ZCB00® & ZMB00®) and the PhysIOL® IOLs (Micro AY123® & Micro F Finevision®). We investigated whether the diffractive IOLs have the same intraoperative behavior as monofocal lenses of the same IOL platform have and whether, in case of diffractive IOLs the desired prediction accuracy of the postoperative refraction of ± 0.5 dpt. can also be achieved by using correction factors.
Setting:
GSD Villa Erbosa, Bologna (I), Augenklinik am Marienplatz, Munich (D), Ocni klinika Gemini, Zlin (CZ), Augentagesklinik-Spreebogen, Berlin (D), and International Vision Correction and Research Centre (IVCRC) & David J Apple Laboratory, Universitäts-Augenklinik Heidelberg (D)
Methods:
Immediately after implantation of the IOL, which was determined by preoperative optical biometry, a measurement with the intraoperative wavefront analyzer IOWA® (Eyesight & Vision GmbH, Germany) is performed. The intraoperative measured refraction is compared with the subjective postoperative refraction determined at least 6 weeks after surgery. The correction factor for the multifocal Abbott Tecnis® and the PhysIOL® IOL platform is derived from this comparison.
Results:
100 pseudophakic eyes were measured: 50 diffractive and 50 monofocal IOL (aspheric monofocal IOL from Abbott Tecnis® and aspheric monofocal IOL of the PhysIOL® platform). In order to compensate the systematic deviations found, IOL-specific correction factors between +0.3 dpt (Micro F Finevision®) and 1.2 dpt (ZMB00®) are determined. This factors have a high correlation with the asphericity of the IOL. The prediction accuracy when using the correction factors is ± 0.5 dpt. The asphericity of the implanted IOL influences the statistically determined correction factors even in case of diffractive IOLs.
Conclusions:
Our results confirm the assumption that intraoperative aberrometry with IOWA ® can significantly improve the quality of refractive outcome in cataract surgery both for monofocal as well as for diffractive intraocular lenses.
Financial Disclosure:
NONE
