Use of fundus autofluorescence images to predict geographic atrophy progression.

Published

Journal Article

PURPOSE: Fundus autofluorescence imaging has been shown to be helpful in predicting progression of geographic atrophy (GA) secondary to age-related macular degeneration. We assess the ability of fundus autofluorescence imaging to predict rate of GA progression using a simple categorical scheme. METHODS: Subjects with GA secondary to age-related macular degeneration with fundus autofluorescence imaging acquired at least 12 months apart were included. Rim area focal hyperautofluorescence was defined as percentage of the 500-μm-wide margin bordering the GA that contained increased autofluorescence. Rim area focal hyperautofluorescence on baseline fundus autofluorescence images was assessed and categorized depending on the extent of rim area focal hyperautofluorescence (Category 1: ≤33%; Category 2: between 33 and 67%; Category 3: ≥67%). Total GA areas at baseline and follow-up were measured to calculate change in GA progression. RESULTS: Forty-five eyes of 45 subjects were included; average duration of follow-up was 18.5 months. Median growth rates differed among categories of baseline rim area focal hyperautofluorescence (P = 0.01 among Categories 1, 2, and 3; P = 0.008 for Category 1 compared with Category 3, Jonckheere-Terpstra test). CONCLUSION: A simple categorical scheme that stratifies the amount of increased autofluorescence in the 500-μm margin bordering GA may be used to differentiate faster and slower progressors.

Full Text

Duke Authors

Cited Authors

  • Bearelly, S; Khanifar, AA; Lederer, DE; Lee, JJ; Ghodasra, JH; Stinnett, SS; Cousins, SW

Published Date

  • January 2011

Published In

Volume / Issue

  • 31 / 1

Start / End Page

  • 81 - 86

PubMed ID

  • 20890245

Pubmed Central ID

  • 20890245

Electronic International Standard Serial Number (EISSN)

  • 1539-2864

Digital Object Identifier (DOI)

  • 10.1097/IAE.0b013e3181e0958b

Language

  • eng

Conference Location

  • United States