ArticleActa ophthalmologica2022
Spectral and lifetime resolution of fundus autofluorescence in advanced age-related macular degeneration revealing different signal sources.
Article in Acta ophthalmologica, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Fundus autofluorescence lifetimes in age-related macular degeneration versus healthy controls in a pseudophakic population.Acta ophthalmologica · 2025Article
- Review
- Fluorescence Lifetime Imaging Ophthalmoscopy, Vision, and Chorioretinal Asymmetries in Aging and Age-Related Macular Degeneration: ALSTAR2.Investigative ophthalmology & visual science · 2025Article
- Hyperautofluorescent material inside areas of macular atrophy may reveal non-lipofuscin fluorophores in late stage AMD.Acta ophthalmologica · 2025Article
- Age-Related Macular Degeneration, a Mathematically Tractable Disease.Investigative ophthalmology & visual science · 2024Review
- Unusual morphology of foveal Müller glia in an adult human born pre-term.Frontiers in cellular neuroscience · 2024Article
- Lipofuscin, Its Origin, Properties, and Contribution to Retinal Fluorescence as a Potential Biomarker of Oxidative Damage to the Retina.Antioxidants (Basel, Switzerland) · 2023Review
- Multimodal imaging and deep learning in geographic atrophy secondary to age-related macular degeneration.Acta ophthalmologica · 2023Review
- Prolonged Lifetimes of Histologic Autofluorescence in Ectopic Retinal Pigment Epithelium in Age-Related Macular Degeneration.Investigative ophthalmology & visual science · 2022Article
- Combining fluorescence lifetime with spectral information in fluorescence lifetime imaging ophthalmoscopy (FLIO).Biomedical optics express · 2022Article
- Progressive Dysmorphia of Retinal Pigment Epithelium in Age-Related Macular Degeneration Investigated by Fluorescence Lifetime Imaging.Investigative ophthalmology & visual science · 2021Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
purposeTo determine the fundus autofluorescence (FAF) lifetimes and spectral characteristics of individual drusen and hyperpigmentation independent of those with retinal pigment epithelium (RPE) in geographic atrophy (GA) areas in late-stage age-related macular degeneration (AMD).
methodsThree consecutive patients with complete RPE and outer retinal atrophy (cRORA) exhibiting drusen that were calcified or associated with hyperpigmentation were investigated with multimodal non-invasive ophthalmic imaging including colour fundus photography (CFP), optical coherence tomography (OCT), near-infrared reflectance (NIR), blue FAF and fluorescence lifetime imaging ophthalmoscopy (FLIO). Fluorescence lifetimes were measured in two spectral channels (short-wavelength spectral channel (SSC): 500-560 nm and long-wavelength spectral channel (LSC): 560-720 nm).
resultsDrusen lacking RPE coverage, as confirmed by CFP and OCT, had longer FAF lifetimes than surrounding cRORA by 127 ± 66 ps (SSC) and 113 ± 48 ps (LSC, both p = 0.008 in Wilcoxon test, N = 9) and by 209 ± 100 ps (SSC) and 121 ± 56 ps (LSC, p < 0.001, N = 14) in two patients. Hyperpigmentation in CFP in a third patient shows strong FAF with prolonged lifetimes. In the SSC, persistent FAF was found inside cRORA. A crescent-shaped hyperfluorescence in an area of continuous RPE but lacking outer retina was seen in one eye with a history of anti-VEGF treatment.
conclusionsShort-wavelength fluorescence in cRORA points to fluorophores beyond RPE organelles. Fluorescence properties of drusen within cRORA differ from in vivo drusen covered by RPE. These limited findings from three patients give new insight into the sources of FAF that can be further elucidated in larger cohorts.
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