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Impact of fibronectin on surface properties of intraocular lenses

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Abstract

Purpose

Physical properties of intraocular lens (IOL) surfaces determine biocompatibility. IOL hydrophobicity of commercially available IOLs with and without fibronectin (FN) coating can be determined by surface contact angle (SCA) measurements. SCA data of IOLs may allow for a rational selection of an IOL type as a function of underlying eye disease.

Setting

University Hospital of Saarland, Homburg (Saar), Germany

Methods

Thirteen IOL types were tested. IOLs were made of poly(methyl methacrylate)(PMMA), acrylate, or silicone. Select IOLs were surface modified by the manufacturer with heparin or a polysaccharide coating. SCA values of IOLs, either uncoated or precoated with FN, were determined using the sessile water drop method.

Results

SCA values ranged from 61.3 to 116.1° for unmodified IOLs, with PMMA IOLs being more hydrophilic (median SCA, 74.1°), silicone IOLs more hydrophobic (median SCA, 113.3°), and acrylate IOLs intermediate (median SCA, 86.6°). Upon FN coating, all genuine acrylate lenses became significantly more hydrophilic while this effect was either nonsignificant or opposite on some PMMA and silicon IOLs. Heparin or polysaccharide surface modification resulted in significantly reduced SCA values. On acrylate IOLs, SCA values did not correlate with the aqueous content of the material.

Conclusions

This study associates IOL materials, surface modifications, and the role of FN preadsorption with SCA values reflecting surface hydrophobicity versus hydrophilicity. It provides a rationale for specific IOL selection as a function of the clinical setting, and a basis for IOL development using tailored surface physicochemistry to enhance biocompatibility and to reduce susceptibility to implant infection.

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Acknowledgments

The technical help of K. Hilgert is gratefully acknowledged. This work has been supported by a grant from the Medical Faculty of the University of Saarland (HOMFOR) to A.C.S.

M.H. acknowledges funding from the German Federal Minister of Education and Research, Competence Network ‘SkinStaph’.

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Authors and Affiliations

  1. Department of Ophthalmology, University of Saarland Hospital, Kirrberger Str. 1, 66421, Homburg (Saar), Germany

    Andreas C. Schroeder, Berthold Seitz & Zisis Gatzioufas

  2. Fluoron GmbH, Neu-Ulm, Germany

    Christian Lingenfelder

  3. NTTF GmbH, Rheinbreitbach, Germany

    Udo Grabowy

  4. Ophthalmology Practitioners, Basteicenter, Ulm, Germany

    Christoph W. Spraul

  5. Department of Medical Microbiology and Hygiene, University of Saarland, Homburg (Saar), Germany

    Mathias Herrmann

Authors
  1. Andreas C. Schroeder
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  2. Christian Lingenfelder
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  3. Berthold Seitz
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  4. Udo Grabowy
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  5. Christoph W. Spraul
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  6. Zisis Gatzioufas
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  7. Mathias Herrmann
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Corresponding author

Correspondence to Andreas C. Schroeder.

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Financial disclosure

None of the authors has a commercial or proprietary interest in any of the products discussed in this article.

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Schroeder, A.C., Lingenfelder, C., Seitz, B. et al. Impact of fibronectin on surface properties of intraocular lenses. Graefes Arch Clin Exp Ophthalmol 247, 1277–1283 (2009). https://doi.org/10.1007/s00417-009-1130-6

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  • DOI: https://doi.org/10.1007/s00417-009-1130-6

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