Ophthalmologica

Research Article

Fluorescence Lifetime Patterns of Retinal Pigment Epithelium Atrophy in Patients with Stargardt Disease and Age-Related Macular Degeneration

Solberg Y. · Dysli C. · Escher P. · Berger L. · Wolf S. · Zinkernagel M.S.

Author affiliations

Department of Ophthalmology, Inselspital, Bern University Hospital, and Department of Biomedical Research, University of Bern, Bern, Switzerland

Keywords: Fluorescence lifetime imaging ophthalmoscopyFluorescence lifetimesStargardt diseaseAge-related macular degenerationAtrophy

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Ophthalmologica 2020;243:195–206
https://doi.org/10.1159/000503567

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Article / Publication Details

First-Page Preview
Abstract of Research Article

Received: January 14, 2019
Accepted: September 18, 2019
Published online: November 19, 2019
Issue release date: May 2020

Number of Print Pages: 12
Number of Figures: 5
Number of Tables: 1

ISSN: 0030-3755 (Print)
eISSN: 1423-0267 (Online)

For additional information: https://www.karger.com/OPH

Abstract

Purpose: To investigate whether autofluorescence lifetime patterns within retinal pigment epithelium (RPE) atrophy differ between age-related macular degeneration (AMD) and Stargardt disease (STGD). Methods: Mean retinal autofluorescence lifetimes were measured in a short and a long spectral channel (SSC: 498–560 nm; LSC: 560–720 nm). Mean retinal fluorescence lifetimes were analyzed with corresponding clinical features, fundus images, fundus autofluorescence intensity images, and optical coherence tomography. Mean fluorescence lifetime values of atrophic areas were compared between the two cohorts and within the same patient to adjacent nonatrophic regions. Results: Mean fluorescence lifetimes within areas with RPE atrophy of 13 patients with STGD (mean age ± SEM 43.7 ± 5 years) and 30 patients with geographic atrophy (mean age: 78 ± 2 years) were analyzed and compared to age-matched healthy participants. The mean area of RPE atrophy in STGD and AMD was 6.6 ± 2.3 mm2 (range: 0.66–33.17 mm2) and 17.5 ± 3.8 mm2 (range: 0.58–50.02 mm2), respectively. In patients with AMD, atrophic areas revealed significantly longer mean fluorescence lifetime values as compared with patients with STGD (SSC: 997 ± 60 vs. 363 ± 26 ps; LSC: 880 ± 46 vs. 393 ± 23 ps; p < 0.0001). Conclusions: This study established that RPE atrophy in patients secondary to STGD and AMD display distinctive mean fluorescence lifetime characteristics. As retinal fluorescence lifetimes within areas of RPE atrophy were significantly longer in AMD patients, the analysis of specific lifetime patterns may provide additional insight into the disease processes and the pathogenetic mechanisms in the development of atrophic patches in AMD and STGD.

© 2019 S. Karger AG, Basel



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Article / Publication Details

First-Page Preview
Abstract of Research Article

Received: January 14, 2019
Accepted: September 18, 2019
Published online: November 19, 2019
Issue release date: May 2020

Number of Print Pages: 12
Number of Figures: 5
Number of Tables: 1

ISSN: 0030-3755 (Print)
eISSN: 1423-0267 (Online)

For additional information: https://www.karger.com/OPH

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2020, Vol.243, No. 3

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