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Scanning laser polarimetry in myopic and hyperopic subjects

  • Clinical Investigation
  • Published:
Graefe's Archive for Clinical and Experimental Ophthalmology Aims and scope Submit manuscript

Abstract

Purpose

To investigate the effect of refraction error and axial length on retinal nerve fiber layer (RNFL) measurements as obtained by scanning laser polarimetry (SLP).

Methods

Besides ophthalmological standard examination (refractive error, keratometry, visual acuity, slit-lamp examination, applanation tonometry, funduscopy), perimetry, axial length measurement by means of ultrasound, and SLP were performed. Seventy-five myopic eyes (between −0.75 D and −8.5 D), 24 hyperopic eyes (0.75 D–6.5 D) and 40 emmetropic eyes were investigated. SLP parameters were compared in the different groups.

Results

The statistical analysis of the absolute thickness values of SLP revealed highly significant (P<0.01) reductions in average thickness, ellipse average, superior average, inferior average, and superior integral in both myopic and hyperopic eyes in comparison with the emmetropic control eyes. The amount of reduction was between 12.9% (inferior average; myopia) and 30.2% (superior integral; hyperopia). There were no significant differences between myopes and hyperopes. A significant linear correlation for many of the SLP parameters with the refractive error (spherical equivalent) but not with axial length was found in both the hyperopic and the myopic group.

Conclusions

Despite a wide interindividual range, SLP measurement values decrease with increasing myopia and hyperopia. In clinical practice, such reduced RNFL thickness values should be viewed with the necessary caution and additional polarimetric signs for glaucomatous damage should be taken into consideration.

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Acknowledgement

Supported by Alfried Krupp von Bohlen und Halbach-Stiftung, Essen, Germany.

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Authors and Affiliations

  1. Department of Ophthalmology, University of Essen, Hufelandstrasse 55, 45122 , Essen, Germany

    Stephan Kremmer, Thomas Zadow, Klaus-Peter Steuhl & J. Michael Selbach

Authors
  1. Stephan Kremmer
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  2. Thomas Zadow
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  3. Klaus-Peter Steuhl
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  4. J. Michael Selbach
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Correspondence to Stephan Kremmer.

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Kremmer, S., Zadow, T., Steuhl, KP. et al. Scanning laser polarimetry in myopic and hyperopic subjects. Graefe's Arch Clin Exp Ophthalmol 242, 489–494 (2004). https://doi.org/10.1007/s00417-004-0859-1

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  • DOI: https://doi.org/10.1007/s00417-004-0859-1

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