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Erste Ergebnisse mit einer neuen aberrationskorrigierten intraokularen Bifokallinse

First results with a new aberration correcting bifocal intraocular lens

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Zusammenfassung

Hintergrund

Bestimmung der funktionellen Ergebnisse mit einer neuen bifokalen Intraokularlinse.

Methoden

Bei 20 Patienten wurde binokular die *Acri.LISA (*Acri.Tec) implantiert. Diese Linse hat eine unterschiedliche Lichtverteilung: Ferne: 65%, Nähe 35%. Das diffraktive Design weist gerundete Übergänge zwischen den Stufen zur Reduktion von Blendung auf und erstreckt sich über 6 mm, um eine Unabhängigkeit vom Pupillendurchmesser zu erreichen. Die asphärische Linsenrückfläche korrigiert eine Asphärizität der Hornhaut von −0,26. Untersucht wurden 6 Wochen postoperativ: unkorrigierte und korrigierte Sehschärfe monokular und binokular in Ferne (ETDRS-charts) und Nähe (C.A.T.-Charts, Birkhäuser-Tafeln), Kontrastempfindlichkeit unter photopischen und mesopischen Bedingungen (F.A.C.T.) sowie Pseudoakkommodationsbreite und subjektive Halointensität.

Ergebnisse

Sechs Wochen postoperativ betrug die mittlere binokulare Sehschärfe(LogMAR) in der Ferne −0,02±0,10 unkorrigiert, –0,07±0,09 mit Korrektur. Die unkorrigierte Nahsehschärfe (LogMAR)lag bei 0,09±0,16, mit Fernkorrektur bei 0,04±0,13. Der binokulare Visus war signifikant besser als bei monokularer Prüfung. Die Defokussierkurve ergab ein bifokales Profil mit einem Dezimalvisus von 0,6±0,21 in 70 cm sowie eine Pseudoakkommodationsbreite von 5,5 dp. 16 der 20 Patienten gaben auf Befragen an, schwach ausgeprägte Halos wahrzunehmen, waren aber dadurch nicht wesentlich beeinträchtigt.

Schlussfolgerungen

Die *Acri.LISA MIOL zeigte 6 Wochen postoperativ sehr gute funktionelle Ergebnisse.

Abstract

Objective

To investigate the functional results with a new bifocal intraocular lens.

Methods

The *Acri.LISA (*Acri.Tec) was implanted bilaterally in 20 patients after uneventful cataract surgery. The new bifocal IOL has a light distribution of 65% for distance and 35% for the near range. The diffractive optics of the lens are designed to be independent of pupil size. Smooth steps in diffractive structure should reduce glare. An aspheric design of the posterior optic surface is engineered to counteract the asphericity of the cornea (–0.26). Postoperative evaluation included 6 weeks after surgery: uncorrected (UCVA) and best corrected (BCVA) visual acuity for distance (ETDRS charts) and near (C.A.T. charts, Birkhäuser charts) monocular and binocular, defocus curve, contrast sensitivity under photopic and mesopic lighting conditions (F.A.C.T.), and subjective assessment of halos

Results

At the 6-week follow-up mean binocular UCVA and BCVA (LogMAR) were −0.02±0.10 and −0.07±0.09, respectively, for distance. Near UCVA (LogMAR) was 0.09±0.16; distance corrected near VA was 0.04±0.13. Visual acuity was significantly superior when tested binocularly compared to monocular testing (p<0.01). The depth of field showed an intermediate decimal VA of 0.6±0.21 at 70 cm and a pseudoaccommodation range of 5.5 D. Of 20 patients, 16 reported slight halos, but no patient was seriously impaired.

Conclusions

The *Acri.LISA showed very good visual performance 6 weeks after bilateral surgery.

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  1. Bundesknappschaftskrankenhaus, An der Klinik 10, 66280, Sulzbach, Deutschland

    H. Kaymak & U. Mester

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  1. H. Kaymak
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  2. U. Mester
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Correspondence to H. Kaymak.

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Kaymak, H., Mester, U. Erste Ergebnisse mit einer neuen aberrationskorrigierten intraokularen Bifokallinse. Ophthalmologe 104, 1046–1051 (2007). https://doi.org/10.1007/s00347-007-1582-1

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