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Multifocal electroretinography in subjects with age-related macular degeneration

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Abstract

Purpose

To evaluate retinal function objectively in subjects with different stages of age-related macular degeneration (AMD) using multifocal electroretinography (mfERG) and compare it with age-matched control group.

Methods

A total of 42 subjects with AMD and 37 age-matched healthy control group aged over 55 years were included in this prospective study. mfERG test was performed to all subjects. Average values in concentric ring analysis in four rings (ring 1, from 0° to 5° of eccentricity relative to fixation; ring 2, from 5° to 10°; ring 3, from 10° to 15°; ring 4, over 15°) and in quadrant analysis (superior nasal quadrant, superior temporal quadrant, inferior nasal quadrant and inferior temporal quadrant) were recorded. Test results were evaluated by one-way ANOVA test and independent samples t test.

Results

In mfERG concentric ring analysis, N1 amplitude, P1 amplitude and N2 amplitude were found to be lower and N1 implicit time, P1 implicit time and N2 implicit time were found to be delayed in subjects with AMD compared to control group. In quadrant analysis, N1, P1 and N2 amplitude was lower in all quadrants, whereas N1 implicit time was normal and P1 and N2 implicit times were prolonged in subjects with AMD.

Conclusion

mfERG is a useful test in evaluating retinal function in subjects with AMD. AMD affects both photoreceptors and inner retinal function at late stages.

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Acknowledgments

This study was supported by Scientific Research Projects Coordination Unit of Afyon Kocatepe University.

Conflict of interest

The authors have no other conflict of interest.

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Authors and Affiliations

  1. Department of Ophthalmology, School of Medicine, Afyon Kocatepe University, Afyonkarahisar, Turkey

    Güliz Fatma Yavas, Tuncay Küsbeci & Ümit Übeyt Inan

Authors
  1. Güliz Fatma Yavas
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  2. Tuncay Küsbeci
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  3. Ümit Übeyt Inan
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Correspondence to Güliz Fatma Yavas.

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Yavas, G.F., Küsbeci, T. & Inan, Ü.Ü. Multifocal electroretinography in subjects with age-related macular degeneration. Doc Ophthalmol 129, 167–175 (2014). https://doi.org/10.1007/s10633-014-9460-z

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  • DOI: https://doi.org/10.1007/s10633-014-9460-z

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