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Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
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Microcystic macular edema: retrograde maculopathy caused by optic neuropathy

Mathias Abegg1, Muriel Dysli1, Sebastian Wolf1

  • 1Department of Ophthalmology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.

Ophthalmology
|October 22, 2013
PubMed
Abstract

Insights

Microcystic macular edema (MME) is a sign of optic neuropathy, not just demyelinating disease. This study found MME is linked to retrograde degeneration in retinal layers, with youth being a risk factor.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Retinal Imaging

Background:

  • Microcystic macular edema (MME) has been observed in demyelinating diseases.
  • The underlying pathophysiology and risk factors for MME require further elucidation.

Purpose of the Study:

  • To investigate retrograde axonal degeneration as a cause of MME.
  • To identify risk factors associated with MME.
  • To expand the anatomical understanding of MME.

Main Methods:

  • Retrospective case series of 117 patients (180 eyes) with optic neuropathy (excluding glaucoma).
  • Analysis of demographic data, visual acuity, and etiology of optic neuropathy.
  • Quantitative measurement of intraretinal anatomy using retinal layer segmentation.

Main Results:

  • MME was present in 8.8% of eyes, primarily in the inner nuclear layer with a perifoveal distribution.
  • MME correlated with thinning of ganglion cell and nerve fiber layers, and thickening of the inner nuclear and deeper retinal layers.
  • Younger age was identified as a significant risk factor for MME.

Conclusions:

  • MME is not exclusive to demyelinating diseases and indicates optic neuropathy regardless of cause.
  • The observed intraretinal changes suggest MME results from retrograde degeneration and impaired fluid resorption.
  • MME provides insights into the structural consequences of optic neuropathy.

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