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Einfluss verschiedener multifokaler Intraokularlinsenkonzepte auf den Streulichtparameter

Influence of different multifocal intraocular lens concepts on retinal stray light parameters

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Zusammenfassung

Hintergrund

Multifokale Intraokularlinsen (MIOL) rufen entsprechend dem individuellen optischen Prinzip mehr oder weniger optische Phänomene hervor. Anhand der Streulichtmessung mit dem C-Quant (Oculus, Deutschland) und einem individuellen Fragebogen sollen 3 verschiedene Multifokallinsenmodelle und -prinzipien verglichen werden.

Patienten und Methoden

Die AMO ReZoom (refraktiv, n=10), die AMO ZM900 (diffraktiv, n=10) und die Oculentis Mplus (Segment-MIOL, n=10) wurden verglichen. Es wurden sowohl Katarakt- als auch refraktive Patienten eingeschlossen. Mindestens 3 Monate postoperativ wurden funktionelle Ergebnisse untersucht, der Streulichtparameter gemessen und eine subjektive Befragung der Patienten durchgeführt.

Ergebnisse

Alle Operationen wurden komplikationslos durchgeführt. Die Gruppen wurden entsprechend Alter, IOL-Stärke und bestkorrigiertem Fernvisus angeglichen. Die MIOLs unterscheiden sich hinsichtlich des Streulichtparameters (Median) signifikant (Kruskal-Wallis-Test, p<0,05): 1,12 log (refraktiv), 1,13 log (Segment) und 1,28 log (diffraktiv). Mit dem subjektiven Fragebogen konnten in der Blendungswahrnehmung keine Unterschiede festgestellt werden. Patienten mit Segment-MIOL geben aber deutlich weniger Störung durch Halos um Lichtquellen an als refraktive und diffraktive MIOL-Patienten.

Schlussfolgerung

Streulicht und subjektive photopische Phänomene korrelieren nicht grundsätzlich. Patienten mit refraktiver MIOL zeigen weniger Streulicht, geben aber mehr Halos an als Patienten mit Segment- oder diffraktiver MIOL.

Abstract

Purpose

Multifocal intraocular lenses (MIOL) are known to induce various photic phenomena depending on the optical principle. The aim of this study was to investigate the correlation between stray light measurements performed with the C-Quant (Oculus, Germany) and the results of a subjective patient questionnaire.

Patients and methods

In this study three different MIOLs were compared: AMO ReZoom (refractive design, n=10), AMO ZM900 (diffractive design, n=10) and Oculentis Mplus (near segment design, n=10). Cataract and refractive patients were enrolled in the study. Functional results were evaluated at least 3 months postoperatively followed by stray light measurements and a subjective questionnaire.

Results

Surgery was performed for all patients without complications. The three groups were matched for age, IOL power and corrected distance visual acuity (CDVA). Significantly different stray light (median) values log(s) were found (Kruskal-Wallis test, p<0.05): 1.12 log (refractive), 1.13 log (segment) and 1.28 log (diffractive). The subjective questionnaire did not show differences in glare perception but refractive MIOL patients noticed more halos surrounding light sources than the diffractive and segment MIOL patients.

Conclusions

Stray light and subjective photopic phenomena do not show any basic correlation. Measurements in patients with refractive MIOLs showed less stray light than near segment or diffractive MIOLs. However, refractive MIOLs induced more halos compared to the other groups analyzed.

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Interessenkonflikt

Der korrespondierende Autor weist auf folgende Beziehungen hin: Der korrespondierende Autor gibt an, dass das International Vision Correction Research Centre (IVCRC) Forschungsgelder von Abbott Medical Optics und Oculentis erhalten hat.

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Correspondence to T.M. Rabsilber.

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Ehmer, A., Rabsilber, T., Mannsfeld, A. et al. Einfluss verschiedener multifokaler Intraokularlinsenkonzepte auf den Streulichtparameter. Ophthalmologe 108, 952–956 (2011). https://doi.org/10.1007/s00347-011-2411-0

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  • DOI: https://doi.org/10.1007/s00347-011-2411-0

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