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Analysis of internal astigmatism and higher order aberrations in eyes implanted with a new diffractive multifocal toric intraocular lens

  • Refractive Surgery
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Abstract

Background

To evaluate the intraocular lens (IOL) position by analyzing the postoperative axis of internal astigmatism as well as the higher-order aberration (HOA) profile after cataract surgery following the implantation of a diffractive multifocal toric IOL

Methods

Prospective study including 51 eyes with corneal astigmatism of 1.25D or higher of 29 patients with ages ranging between 20 and 61 years old. All cases underwent uneventful cataract surgery with implantation of the AT LISA 909 M toric IOL (Zeiss). Visual, refractive and corneal topograpy changes were evaluated during a 12-month follow-up. In addition, the axis of internal astigmatism as well as ocular, corneal, and internal HOA (5-mm pupil) were evaluated postoperatively by means of an integrated aberrometer (OPD Scan II, Nidek).

Results

A significant improvement in uncorrected distance and near visual acuities (p < 0.01) was found, which was consistent with a significant correction of manifest astigmatism (p < 0.01). No significant changes were observed in corneal astigmatism (p = 0.32). With regard to IOL alignment, the difference between the axes of postoperative internal and preoperative corneal astigmatisms was close to perpendicularity (12 months, 87.16° ± 7.14), without significant changes during the first 6 months (p ≥ 0.46). Small but significant changes were detected afterwards (p = 0.01). Additionally, this angular difference correlated with the postoperative magnitude of manifest cylinder (r = 0.31, p = 0.03). Minimal contribution of intraocular optics to the global magnitude of HOA was observed.

Conclusions

The diffractive multifocal toric IOL evaluated is able to provide a predictable astigmatic correction with apparent excellent levels of optical quality during the first year after implantation.

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Authors and Affiliations

  1. Eye Department, Regional Hospital, Havlickuv Brod, Czech Republic

    Peter Mojzis, Vera Ctvrteckova & Iva Rydlova

  2. Eye Clinic of Jessenius Faculty of Medicine in Martin, Martin, Slovakia

    Peter Mojzis

  3. Department of Optics, Pharmacology and Anatomy, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690, San Vicente del Raspeig, Alicante, Spain

    David P. Piñero

  4. Foundation for the Visual Quality (Fundación para la Calidad Visual, FUNCAVIS), Alicante, Spain

    David P. Piñero

Authors
  1. Peter Mojzis
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  2. David P. Piñero
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  3. Vera Ctvrteckova
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  4. Iva Rydlova
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Corresponding author

Correspondence to David P. Piñero.

Additional information

The authors have no financial or proprietary interest in any product, method, or material described herein.

All the authors have full control of all primary data, and they agree to allow Graefe’s Archive for Clinical and Experimental Ophthalmology to review the data of the current study if requested.

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Mojzis, P., Piñero, D.P., Ctvrteckova, V. et al. Analysis of internal astigmatism and higher order aberrations in eyes implanted with a new diffractive multifocal toric intraocular lens. Graefes Arch Clin Exp Ophthalmol 251, 341–348 (2013). https://doi.org/10.1007/s00417-012-2061-1

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  • DOI: https://doi.org/10.1007/s00417-012-2061-1

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