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Subtle retinal pathology in amyotrophic lateral sclerosis.

Marius Ringelstein1, Philipp Albrecht1, Martin Südmeyer2

  • 1Department of Neurology, Medical Faculty, Heinrich-Heine University Düsseldorf, Germany.

Annals of Clinical and Translational Neurology
|January 16, 2015
PubMed
Summary

Amyotrophic lateral sclerosis (ALS) causes retinal damage, including thinning of the inner nuclear layer. This suggests neurodegeneration extends beyond the motor system in ALS patients.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Neuroscience

Background:

  • Amyotrophic lateral sclerosis (ALS) presents with neuro-ophthalmological issues like reduced visual acuity.
  • Oculomotor control disturbances are known, but retinal changes require further investigation.

Purpose of the Study:

  • To investigate retinal alterations in patients with amyotrophic lateral sclerosis (ALS).
  • To compare retinal structure in ALS patients versus healthy controls using advanced imaging.

Main Methods:

  • Utilized high-resolution spectral domain optical coherence tomography (SD-OCT).
  • Employed retinal segmentation to analyze macular thickness, retinal nerve fiber layer (RNFL), and inner nuclear layer (INL).
  • Compared findings in 24 ALS patients (20 definite, 4 probable) with matched controls.

Main Results:

  • Observed a subtle reduction in macular thickness in ALS patients.
  • Detected a decrease in retinal nerve fiber layer (RNFL) thickness.
  • Found a marked thinning of the inner nuclear layer (INL) in the ALS cohort.

Conclusions:

  • ALS is associated with a unique pattern of retinal damage.
  • Neurodegeneration in ALS may affect the retina, extending beyond the primary motor system.
  • Retinal imaging could offer insights into the broader impact of ALS.