Spectrally Resolved Fundus Autofluorescence in ABCA4-Related Retinopathy
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Spectrally Resolved Fundus Autofluorescence in ABCA4-Related Retinopathy. / Dysli, Chantal; Müller, Philipp L; Birtel, Johannes; Holz, Frank G; Herrmann, Philipp.
in: INVEST OPHTH VIS SCI, Jahrgang 60, Nr. 1, 02.01.2019, S. 274-281.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Spectrally Resolved Fundus Autofluorescence in ABCA4-Related Retinopathy
AU - Dysli, Chantal
AU - Müller, Philipp L
AU - Birtel, Johannes
AU - Holz, Frank G
AU - Herrmann, Philipp
PY - 2019/1/2
Y1 - 2019/1/2
N2 - PURPOSE: To investigate the green and red fluorescence emission component of hyperautofluorescent flecks in patients with ABCA4-related retinopathy.METHODS: A confocal light-emitting diode (LED)-based retinal imaging system (EIDON) was used for image acquisition of patients with genetically confirmed ABCA4 mutations. Using 450-nm excitation wavelengths, spectrally resolved retinal autofluorescence images were acquired in two wavelength ranges: green emission fluorescent component (GEFC, 500-560 nm), and red emission fluorescent component (REFC, 560-700 nm). Image analysis included comparison of the two emission spectra, correlation with confocal EIDON LED color fundus images, and spectral-domain optical coherence tomography (OCT).RESULTS: Eighty eyes of 40 patients with ABCA4-related retinopathy were examined. A characteristic distribution of flecks with distinct pattern of fluorescence emission components was detected and quantified. Independent from disease manifestation, different proportions of GEFC and REFC were identified within single flecks. Centrally located flecks showed a higher proportion of GEFC and were characterized by local disruption of outer retinal bands in OCT. More peripheral flecks were more prominent in the REFC and correlated to subretinal hyperreflective deposits with only minor pathologic alterations of outer retinal layers. Individual flecks even showed spatial differences of the predominant fluorescent component.CONCLUSIONS: Spectrally resolved fundus autofluorescence intensity images feature characteristic distribution of GEFC and REFC in flecks, highlighting the heterogeneity of fluorophore distribution and providing more insight into the pathogenesis of ABCA4-related retinopathy. In view of upcoming therapeutic trials, longitudinal analysis of fluorescent components might facilitate monitoring of subtle disease progression and/or treatment effects.
AB - PURPOSE: To investigate the green and red fluorescence emission component of hyperautofluorescent flecks in patients with ABCA4-related retinopathy.METHODS: A confocal light-emitting diode (LED)-based retinal imaging system (EIDON) was used for image acquisition of patients with genetically confirmed ABCA4 mutations. Using 450-nm excitation wavelengths, spectrally resolved retinal autofluorescence images were acquired in two wavelength ranges: green emission fluorescent component (GEFC, 500-560 nm), and red emission fluorescent component (REFC, 560-700 nm). Image analysis included comparison of the two emission spectra, correlation with confocal EIDON LED color fundus images, and spectral-domain optical coherence tomography (OCT).RESULTS: Eighty eyes of 40 patients with ABCA4-related retinopathy were examined. A characteristic distribution of flecks with distinct pattern of fluorescence emission components was detected and quantified. Independent from disease manifestation, different proportions of GEFC and REFC were identified within single flecks. Centrally located flecks showed a higher proportion of GEFC and were characterized by local disruption of outer retinal bands in OCT. More peripheral flecks were more prominent in the REFC and correlated to subretinal hyperreflective deposits with only minor pathologic alterations of outer retinal layers. Individual flecks even showed spatial differences of the predominant fluorescent component.CONCLUSIONS: Spectrally resolved fundus autofluorescence intensity images feature characteristic distribution of GEFC and REFC in flecks, highlighting the heterogeneity of fluorophore distribution and providing more insight into the pathogenesis of ABCA4-related retinopathy. In view of upcoming therapeutic trials, longitudinal analysis of fluorescent components might facilitate monitoring of subtle disease progression and/or treatment effects.
KW - ATP-Binding Cassette Transporters/genetics
KW - Adolescent
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Child
KW - Cross-Sectional Studies
KW - Female
KW - Fluorescein Angiography
KW - Fundus Oculi
KW - Humans
KW - Male
KW - Middle Aged
KW - Multimodal Imaging
KW - Mutation
KW - Ophthalmoscopy
KW - Optical Imaging
KW - Retinal Dystrophies/diagnosis
KW - Retinal Pigment Epithelium/pathology
KW - Tomography, Optical Coherence
U2 - 10.1167/iovs.18-25755
DO - 10.1167/iovs.18-25755
M3 - SCORING: Journal article
C2 - 30657522
VL - 60
SP - 274
EP - 281
JO - INVEST OPHTH VIS SCI
JF - INVEST OPHTH VIS SCI
SN - 0146-0404
IS - 1
ER -