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Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration
PURPOSE: To investigate fundus autofluorescence (FAF) lifetimes in patients with nonexudative AMD. METHODS: A total of 150 eyes of 110 patients (mean age: 73.2 ± 10.7 years) with nonexudative AMD, as well as a healthy group of 57 eyes in 38 subjects (mean age: 66.5 ± 8.7 years), were included. Inves...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Association for Research in Vision and Ophthalmology
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009207/ https://www.ncbi.nlm.nih.gov/pubmed/30025104 http://dx.doi.org/10.1167/iovs.17-23764 |
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author | Sauer, Lydia Gensure, Rebekah H. Andersen, Karl M. Kreilkamp, Lukas Hageman, Gregory S. Hammer, Martin Bernstein, Paul S. |
author_facet | Sauer, Lydia Gensure, Rebekah H. Andersen, Karl M. Kreilkamp, Lukas Hageman, Gregory S. Hammer, Martin Bernstein, Paul S. |
author_sort | Sauer, Lydia |
collection | PubMed |
description | PURPOSE: To investigate fundus autofluorescence (FAF) lifetimes in patients with nonexudative AMD. METHODS: A total of 150 eyes of 110 patients (mean age: 73.2 ± 10.7 years) with nonexudative AMD, as well as a healthy group of 57 eyes in 38 subjects (mean age: 66.5 ± 8.7 years), were included. Investigations were conducted at the University Eye Clinic in Jena, Germany, as well as the Moran Eye Center in Salt Lake City, Utah, USA, using the Heidelberg Engineering Spectralis-based fluorescence lifetime imaging ophthalmoscope (FLIO). A 30° retinal field centered at the fovea was investigated. FAF decays were detected in short (498–560 nm) and long (560–720 nm, LSC) spectral channels. The mean fluorescence lifetimes (τ(m)) were calculated. Optical coherence tomography scans and fundus photographs were also recorded. RESULTS: In patients with nonexudative AMD, FLIO shows a ring-shaped pattern of prolonged τ(m) in the LSC. This pattern occurs in all patients with AMD (including very early stages) and in one-third of the healthy controls. FAF lifetimes were longer with more advanced stages. The presence of drusen is associated with prolonged τ(m) when compared with the healthy fundus, but drusen identification is difficult with FLIO only. CONCLUSIONS: FLIO detects a clear pattern of changes within the fundus, which appears to be AMD-associated. These changes are already visible in early AMD stages and not masked by the presence of other coexisting retinal diseases. These findings may be useful for the early diagnosis of AMD and to distinguish AMD from other retinal diseases. |
format | Online Article Text |
id | pubmed-6009207 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Association for Research in Vision and Ophthalmology |
record_format | MEDLINE/PubMed |
spelling | pubmed-60092072018-06-21 Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration Sauer, Lydia Gensure, Rebekah H. Andersen, Karl M. Kreilkamp, Lukas Hageman, Gregory S. Hammer, Martin Bernstein, Paul S. Invest Ophthalmol Vis Sci Special Issue PURPOSE: To investigate fundus autofluorescence (FAF) lifetimes in patients with nonexudative AMD. METHODS: A total of 150 eyes of 110 patients (mean age: 73.2 ± 10.7 years) with nonexudative AMD, as well as a healthy group of 57 eyes in 38 subjects (mean age: 66.5 ± 8.7 years), were included. Investigations were conducted at the University Eye Clinic in Jena, Germany, as well as the Moran Eye Center in Salt Lake City, Utah, USA, using the Heidelberg Engineering Spectralis-based fluorescence lifetime imaging ophthalmoscope (FLIO). A 30° retinal field centered at the fovea was investigated. FAF decays were detected in short (498–560 nm) and long (560–720 nm, LSC) spectral channels. The mean fluorescence lifetimes (τ(m)) were calculated. Optical coherence tomography scans and fundus photographs were also recorded. RESULTS: In patients with nonexudative AMD, FLIO shows a ring-shaped pattern of prolonged τ(m) in the LSC. This pattern occurs in all patients with AMD (including very early stages) and in one-third of the healthy controls. FAF lifetimes were longer with more advanced stages. The presence of drusen is associated with prolonged τ(m) when compared with the healthy fundus, but drusen identification is difficult with FLIO only. CONCLUSIONS: FLIO detects a clear pattern of changes within the fundus, which appears to be AMD-associated. These changes are already visible in early AMD stages and not masked by the presence of other coexisting retinal diseases. These findings may be useful for the early diagnosis of AMD and to distinguish AMD from other retinal diseases. The Association for Research in Vision and Ophthalmology 2018-06 /pmc/articles/PMC6009207/ /pubmed/30025104 http://dx.doi.org/10.1167/iovs.17-23764 Text en Copyright 2018 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. |
spellingShingle | Special Issue Sauer, Lydia Gensure, Rebekah H. Andersen, Karl M. Kreilkamp, Lukas Hageman, Gregory S. Hammer, Martin Bernstein, Paul S. Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title | Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title_full | Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title_fullStr | Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title_full_unstemmed | Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title_short | Patterns of Fundus Autofluorescence Lifetimes In Eyes of Individuals With Nonexudative Age-Related Macular Degeneration |
title_sort | patterns of fundus autofluorescence lifetimes in eyes of individuals with nonexudative age-related macular degeneration |
topic | Special Issue |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009207/ https://www.ncbi.nlm.nih.gov/pubmed/30025104 http://dx.doi.org/10.1167/iovs.17-23764 |
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