Optical coherence tomography in neurodegenerative disorders.

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.