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Paavo M, Carvalho JRL, Lee W, Sengillo JD, Tsang SH, Sparrow JR. Patterns and Intensities of Near-Infrared and Short-Wavelength Fundus Autofluorescence in Choroideremia Probands and Carriers. Invest Ophthalmol Vis Sci 2020; 60:3752-3761. [PMID: 31499530 PMCID: PMC6735265 DOI: 10.1167/iovs.19-27366] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Purpose To ascertain cellular constituents within islands of preserved retina in choroideremia (CHM) by multimodal imaging. Methods CHM probands (16) and female carriers (9) of CHM were studied. Near-infrared autofluorescence (NIR-AF; 787-nm excitation; emission, >830 nm), short-wavelength autofluorescence (SW-AF; 488-nm excitation, 500- to 680-nm emission), and spectral-domain optical coherence tomography (SD-OCT) images were acquired with a confocal scanning laser ophthalmoscope. SW-AF intensities were measured by quantitative fundus autofluorescence (qAF), and NIR-AF intensity profiles were analyzed. Retinal thicknesses and visual acuity were measured. Results In 19 of 31 eyes of affected males, islands of preserved NIR-AF signal were also visible as fluorescence signal in SW-AF images. Notable in 12 eyes were areas of speckled SW-AF that was hypoautofluorescent in the NIR-AF image. Islands of preserved NIR-AF and SW-AF signal were often associated with the presence of visible but thinned outer nuclear layer and discontinuous interdigitation zone, ellipsoid zone, and external limiting membrane. NIR-AF profiles revealed that even in areas of preserved retina, the NIR-AF signal from retinal pigment epithelium (RPE) melanin is greatly reduced. qAF was reduced overall. The fundus of carriers was characterized by a mosaicism in which patches of reduced NIR-AF colocalized with reduced SW-AF. Conclusions In CHM-affected males, the presence of RPE was indicated by an NIR-AF signal and the absence of hypertransmission of OCT signal into the choroid. RPE preservation was associated with better visual acuity. In carriers, patches of reduced SW-AF colocalized with decreased NIR-AF and qAF was severely reduced.
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Affiliation(s)
- Maarjaliis Paavo
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States.,Department of Ophthalmology, Helsinki University Hospital, Helsinki, Finland
| | - Jose R L Carvalho
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States.,Department of Ophthalmology, Empresa Brasileira de Servicos Hospitalares, Hospital das Clinicas de Pernambuco, Federal University of Pernambuco, Recife, Brazil.,Department of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil
| | - Winston Lee
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States
| | - Jesse D Sengillo
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States.,Department of Internal Medicine, Reading Hospital of Tower Health, West Reading, Pennsylvania, United States
| | - Stephen H Tsang
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States.,Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York, United States
| | - Janet R Sparrow
- Department of Ophthalmology Columbia University Medical Center, New York, New York, United States.,Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York, United States
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Fishman GA, Vajaranant TS. Author reply. Ophthalmology 2009. [DOI: 10.1016/j.ophtha.2009.01.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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