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CORRELATION STUDY BETWEEN DRUSEN MORPHOLOGY AND FUNDUS AUTOFLUORESCENCE.

Rita Flores1,2, Angela Carneiro3, Joana Serra2

  • 1Department of Ophthalmology, Medical Retina Service, CHULC-Centro Hospitalar Lisboa Central, Portugal.

Retina (Philadelphia, Pa.)
|July 1, 2020
PubMed
Summary
This summary is machine-generated.

Autofluorescence imaging correlates with drusen morphology and outer retinal changes in intermediate age-related macular degeneration. These findings aid in understanding nonexudative age-related macular degeneration progression biomarkers.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Diseases

Background:

  • Age-related macular degeneration (AMD) is a leading cause of vision loss.
  • Intermediate AMD is characterized by drusen and outer retinal changes.
  • Autofluorescence (AF) imaging provides insights into retinal pigment epithelium function.

Purpose of the Study:

  • To correlate drusen morphology and outer retinal status with autofluorescence (AF) imaging.
  • To investigate imaging biomarkers for nonexudative age-related macular degeneration progression.

Main Methods:

  • Multimodal imaging including color fundus photography and spectral-domain optic coherence tomography (SD-OCT).
  • Analysis of drusen morphology, AF characteristics, and outer retinal structural integrity (ELM, EZ, RPE/Bruch membrane).
  • Spearman's correlation coefficient used to assess relationships between imaging features.

Main Results:

  • 228 drusen analyzed from 53 patients; 130 soft and 98 cuticular drusen.
  • 60% isoautofluorescent, 35% hyperautofluorescent, 5% hypoautofluorescent drusen.
  • Positive correlation found between drusen AF and hyperreflective foci (r=0.4). Outer retinal morphology also correlated with AF findings (r=0.3).

Conclusions:

  • Multimodal imaging reveals diverse ultrastructural changes in drusen.
  • Drusen morphology and AF findings are correlated, suggesting potential progression biomarkers.
  • Further research needed to identify cofactors influencing AMD progression.