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Related Experiment Video

Updated: Mar 25, 2026

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Inner-retinal changes in AMD: Evidence, mechanisms, and future perspectives.

Matt Trinh1, Michael Kalloniatis2, Bryan William Jones3

  • 1School of Optometry and Vision Science, University of New South Wales, Sydney, NSW, Australia.

Progress in Retinal and Eye Research
|March 23, 2026
PubMed
Summary
This summary is machine-generated.

Age-related macular degeneration (AMD) involves inner-retinal changes, not just outer-retina issues. These early alterations impact vision and reshape understanding of this neurovascular disease.

Keywords:
Age-related macular degenerationInner-retinaOptical coherence tomographyOptical coherence tomography angiographyRetinal neuronsRetinal perfusionRetinal remodelling

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Pathogenesis of Age-related Macular Degeneration (AMD)

Background:

  • Traditionally, Age-related Macular Degeneration (AMD) was viewed as an outer-retina and choroid disorder.
  • Emerging evidence highlights significant inner-retinal involvement from early stages of AMD.
  • This challenges the established understanding of AMD pathogenesis.

Purpose of the Study:

  • To review clinical and experimental evidence of inner-retinal changes in AMD.
  • To explore how these changes impact disease understanding and management.
  • To reframe AMD as a multi-layer neurovascular disease.

Main Methods:

  • Synthesis of clinical and experimental data on inner-retinal alterations in AMD.
  • Utilisation of advanced imaging like optical coherence tomography (OCT) and OCT angiography (OCTA).
  • Inclusion of high-resolution histology findings.

Main Results:

  • Identified inner-retinal changes include layer-specific thinning, microvascular rarefaction, impaired neurovascular coupling, and reactive gliosis.
  • These changes are prevalent in early AMD and can precede or parallel outer-retinal degeneration.
  • Inner-retinal pathology contributes to visual dysfunction not solely explained by photoreceptor loss.

Conclusions:

  • Inner- and outer-retinal pathologies interact bidirectionally, supporting a neurodegenerative model.
  • Inner-retinal integrity is crucial for AMD pathogenesis, influencing vulnerability.
  • Recognizing inner-retinal involvement offers potential for earlier diagnosis, monitoring, and novel therapeutics.