Dysli, Chantal-Simone; Fink, Rahel; Wolf, Sebastian; Zinkernagel, Martin (2017). Fluorescence Lifetimes of Drusen in Age-Related Macular Degeneration. Investigative ophthalmology & visual science, 58(11), pp. 4856-4862. Association for Research in Vision and Ophthalmology 10.1167/iovs.17-22184
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Purpose
The purpose of this study was to characterize fundus autofluorescence lifetimes of retinal drusen in patients with AMD.
Methods
Patients with AMD and retinal drusen and healthy controls of similar age were examined. A fluorescence lifetime imaging ophthalmoscope was used. Retinal autofluorescence was excited using a 473-nm pulsed laser, and fundus autofluorescence lifetimes of the central retina (30°) were measured in two distinct spectral channels (short: 498 to 560 nm [SSC]; long: 560 to 720 nm [LSC]). Mean retinal autofluorescence lifetimes, corresponding fundus autofluorescence intensity images, spectral domain optical coherence tomography, color fundus images, and clinical data were investigated. Patients were analyzed in two distinct groups (soft drusen and reticular pseudodrusen) and compared with control subjects.
Results
Sixty-four eyes of 64 patients with AMD and retinal drusen (age: mean ± SD, 78 ± 8.5 years; range, 59 to 94 years) were investigated and compared with a control group of 20 age-matched healthy subjects. Mean retinal autofluorescence lifetimes in patients with AMD was significantly prolonged compared with the healthy control eyes (mean ± SEM: SSC, 486 ± 18 vs. 332 ± 11 ps, P < 0.0001; LSC: 493 ± 9 vs. 382 ± 17 ps, P < 0.0001). Areas of drusen featured a wide range of fluorescence lifetime values. Long lifetimes were identified in areas of atrophy and in areas of intraretinal hyperreflective deposits. Short lifetimes corresponded to deposits within the photoreceptor outer segment band.
Conclusions
Mean retinal autofluorescence lifetimes in AMD patients are significantly prolonged. Intraretinal deposits cause prolonged lifetimes, whereas deposits in the area of the outer photoreceptor segments lead to short fluorescence lifetimes.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ophthalmology |
UniBE Contributor: |
Dysli, Chantal-Simone, Wolf, Sebastian (B), Zinkernagel, Martin Sebastian |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0146-0404 |
Publisher: |
Association for Research in Vision and Ophthalmology |
Language: |
English |
Submitter: |
Sebastian Wolf |
Date Deposited: |
13 Dec 2017 14:22 |
Last Modified: |
02 Mar 2023 23:29 |
Publisher DOI: |
10.1167/iovs.17-22184 |
PubMed ID: |
28973332 |
BORIS DOI: |
10.7892/boris.107266 |
URI: |
https://boris.unibe.ch/id/eprint/107266 |
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