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Updated: Jun 6, 2026
09:17
Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
[Imaging diagostics of geographic atrophy]
M Fleckenstein1, U Wolf-Schnurrbusch, S Wolf
1Universitäts-Augenklinik Bonn, Ernst-Abbe-Strasse 2, Bonn, Deutschland. monika.fleckenstein@ukb.uni-bonn.de
Summary
Advanced imaging techniques like fundus autofluorescence (FAF) and optical coherence tomography (OCT) are crucial for understanding geographic atrophy (GA) in age-related macular degeneration (AMD). These methods enable precise measurement and monitoring of GA progression, aiding in clinical trials.
Area of Science:
- Ophthalmology
- Medical Imaging
- Pathophysiology
Context:
- Age-related macular degeneration (AMD) is a leading cause of vision loss.
- Geographic atrophy (GA), a late stage of AMD, involves progressive retinal cell death.
- Understanding GA's genesis and progression is vital for developing effective treatments.
Purpose:
- To highlight the role of advanced imaging technologies in studying geographic atrophy (GA).
- To emphasize the utility of fundus autofluorescence (FAF) and optical coherence tomography (OCT) in GA assessment.
- To discuss the application of imaging-derived endpoints in clinical trials for GA.
Summary:
- Fundus autofluorescence (FAF) imaging accurately defines GA lesion boundaries and identifies progression markers.
- High-resolution optical coherence tomography (OCT) reveals microstructural retinal changes associated with GA.
- Non-invasive FAF is the gold standard for monitoring the enlargement of atrophic areas in GA.
Impact:
- Imaging technologies provide critical insights into GA pathophysiology and progression.
- FAF and OCT serve as valuable tools for evaluating the effectiveness of interventions in GA clinical trials.
- Anatomical endpoints derived from imaging act as surrogate markers for disease progression in slow-progressing GA.
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