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A. Lindenschmid, C. R. Winkler von Mohrenfels, M. Küchle, U. Schönherr, C. P. Lohmann; Optical Aberrations and Contrast Sensitivity After Implantation of Aspherical Intraocular Lenses. Invest. Ophthalmol. Vis. Sci. 2007;48(13):3129. doi: https://doi.org/.
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In the past years phaco emulsification is getting more and popular. With improvements of this technique the expectations of the patients are rising. Not only the visual acuity but also the quality of vision, especially contrast sensitivity and night vision is getting more and more important.
The aim of this study was the evaluation of optical aberrations (HOA) after implantation of an aspherical IOLSetting: Three surgical centers participated this study.Klinikum rechts der Isar, Technical University Munich, GermanyEye Research Institute Erlangen, GermanyKonventspital Barmherzige Brüder Linz, Austria
In 40 eyes phako surgery was performed with an aspherical IOL (Human Optics MX 611 ASP) . 6 weeks and 6 months after surgery the best corrected visual acuity (BCVA), subjective refraction, topography, higher order aberrations via ray tracing (Tracey) and contrast sensitivitiy tests (Pelli Robson, Optec 6500) have been performed.
All cataract surgeries have been performed without any complications. After 3 months all patients had a good visual acuity with an average of 20/25. All lenses showed a good centration and no glistenings were apparent. Subjectively all patients reported a good contrast sensitivity. The patients recognized in average the first 9,85 frequencies of the Pelli Robson Chart Contrast Sensitivity Test. The Optec sinusoidal contrast sensitivity in photopic and scotopic conditions with and without glare showed for all patients in the region of normal area. The average spherical aberrations in the MX 611 ASP 0,0906 µm on 4,5 mm pupil size.For all patients all aberrations rose with increasing pupil diameter.Discussion/
The implantation of this micro incision lens showed good results especially the visual acuity and the contrast sensitivity tests. The spherical aberrations were relatively low compared to standard IOL implantation. Also the contrast sensitivity showed very promising results.
Technical University Munich
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