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Related Concept Videos

Anatomy of the Eyeball01:20

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...

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Related Experiment Video

Updated: May 14, 2026

Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
10:14

Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration

Published on: May 26, 2023

Point-to-Point Macular Structure-Function Relationships in Healthy and Glaucomatous Eyes Using OCT and

Jose Javier Garcia-Medina1,2,3,4,5, Paloma Sobrado-Calvo2,5, Lorena Lopez-Canovas2

  • 1General University Hospital Morales Meseguer, 30008 Murcia, Spain.

Journal of Clinical Medicine
|May 13, 2026
PubMed
Summary

Glaucoma impacts inner retinal layers, showing structure-function links between macular sensitivity and thickness. Outer retinal layers were unaffected, revealing localized patterns in glaucoma patients.

Keywords:
ganglion cell complexglaucomamacular sensitivitymicroperimetryoptical coherence tomographypoint-to-point analysisretinal layer thicknessstructure–function relationship

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Last Updated: May 14, 2026

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Published on: February 15, 2022

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Glaucoma is a leading cause of irreversible blindness.
  • Understanding the structure-function relationship in the macula is crucial for early glaucoma detection.
  • Current methods often average regional data, potentially obscuring localized changes.

Purpose of the Study:

  • To investigate point-to-point relationships between macular sensitivity and intraretinal layer thickness.
  • To compare these relationships in healthy versus glaucomatous eyes.
  • To utilize combined optical coherence tomography (OCT) and microperimetry for high-resolution analysis.

Main Methods:

  • Seventy-two eyes (27 healthy, 45 glaucoma) underwent MP-1 microperimetry and Spectralis OCT.
  • Automatic segmentation identified key retinal layers: macular retinal nerve fiber layer (mRNFL), ganglion cell layer (GCL), inner plexiform layer (IPL), and ganglion cell complex.
  • Anatomical alignment of microperimetry and OCT data, considering ganglion cell displacement, enabled pointwise correlation analysis.

Main Results:

  • Healthy eyes showed minimal pointwise correlations.
  • Glaucomatous eyes exhibited significant positive correlations in inner retinal layers (mRNFL, GCL, IPL, GCL+IPL), but not outer layers.
  • Distinct spatial patterns emerged: peripheral for mRNFL, paracentral temporal for GCL, IPL, and GCL+IPL, with the ganglion cell complex showing the most associations.

Conclusions:

  • Pointwise analysis reveals localized, heterogeneous structure-function coupling in glaucoma, primarily involving ganglion cell-related layers.
  • High-resolution mapping highlights spatial relationships missed by regional averaging.
  • This approach complements, but does not replace, established regional analyses for glaucoma assessment.