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Optical coherence tomography in neurodegenerative disorders.

Leonardo Provetti Cunha1,2,3, Leopoldo Antônio Pires3,4,4, Marcelo Maroco Cruzeiro3,4,4

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Optical coherence tomography (OCT) offers a noninvasive method to detect neurodegenerative diseases by analyzing retinal structure. This accessible technique shows promise for early diagnosis and large-scale screening.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Medical Imaging

Background:

  • Brain imaging is crucial for neurodegenerative diseases but often costly and inaccessible.
  • Retinal imaging presents a low-cost, accessible alternative due to shared biological similarities with the brain.
  • Optical coherence tomography (OCT) is a key noninvasive imaging technique for retinal analysis.

Purpose of the Study:

  • To review the clinical utility of OCT in diagnosing and evaluating neurodegenerative diseases.
  • To highlight OCT's potential as a noninvasive biomarker for early disease detection.
  • To emphasize the accessibility and cost-effectiveness of OCT for population screening.

Main Methods:

  • Review of clinical studies utilizing optical coherence tomography (OCT) for neurodegenerative disease assessment.
  • Analysis of OCT's ability to measure retinal layer thickness, particularly the inner retinal nerve fiber layer.
  • Focus on the correlation between retinal structural changes and neurodegenerative conditions.

Main Results:

  • Neurodegenerative diseases are associated with reduced inner retinal nerve fiber layer thickness.
  • OCT provides quantitative, reproducible measurements of retinal structures.
  • Studies demonstrate the potential of OCT in identifying early signs of neurodegeneration.

Conclusions:

  • Optical coherence tomography is a valuable, noninvasive tool for diagnosing and monitoring neurodegenerative diseases.
  • The retina serves as a promising biomarker due to its structural and biochemical similarities to the brain.
  • OCT's accessibility and cost-effectiveness support its use in large-scale population screening for early detection.