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Related Experiment Video

Updated: Apr 26, 2026

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Focal relationship between structure and function within the central 10 degrees in glaucoma.

Shinji Ohkubo1, Tomomi Higashide1, Sachiko Udagawa1

  • 1Department of Ophthalmology and Visual Science, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.

Investigative Ophthalmology & Visual Science
|August 2, 2014
PubMed
Summary

The ganglion cell complex (GCC) thickness is the best indicator of visual function in glaucoma. Adjusting for retinal ganglion cell (RGC) displacement is crucial for accurate structure-function analysis in the macula.

Keywords:
RGC displacementfocal relationshipinner macular thicknessvisual sensitivity

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Glaucoma is a progressive optic neuropathy characterized by visual field loss.
  • Assessing the relationship between retinal structure and visual function is critical for glaucoma management.
  • Inner macular thickness measurements are potential biomarkers for glaucoma detection and progression.

Purpose of the Study:

  • To determine the most effective inner macular thickness measurements for evaluating visual sensitivity in glaucoma.
  • To identify which retinal layers require adjustment for retinal ganglion cell (RGC) displacement in structure-function analysis.

Main Methods:

  • Sixty eyes of glaucoma patients underwent standard automated perimetry.
  • Spearman's rank correlation coefficients were used to compare visual sensitivity with RNFL, GCL, GCL+IPL, and GCC thickness.
  • Analyses were performed with and without adjustment for RGC displacement.

Main Results:

  • GCC thickness showed significant correlations with visual sensitivity across all test points in the central 10° after adjusting for RGC displacement.
  • Adjusting for RGC displacement improved the correlation between GCL, GCL+IPL, and GCC thickness and visual sensitivity in the central macula.
  • RNFL thickness correlated with sensitivity, but less consistently than GCC, especially in the papillomacular bundle region.

Conclusions:

  • The ganglion cell complex (GCC) is the most valuable parameter for assessing structure-function relationships in the central macula in glaucoma.
  • Accounting for RGC displacement is essential for accurate evaluation of the GCL-related layer's structure and function in glaucoma.