Anna I Dastiridou1, Elodie Bousquet2, Laura Kuehlewein1, Tudor Tepelus1, Dominique Monnet2, Sawsen Salah2, Antoine Brezin2, Srinivas R Sadda3. 1. Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, California. 2. Department of Ophthalmology, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, AP-HP, Université Paris 5, Sorbonne Paris Cité, Paris, France. 3. Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, California; Department of Ophthalmology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California. Electronic address: ssadda@doheny.org.
Abstract
PURPOSE: To characterize choroidal thickness and choroidal reflectivity in the eyes of patients with birdshot chorioretinopathy (BSCR). DESIGN: Cross-sectional observational study. PARTICIPANTS: Two hundred twenty BSCR patients and 59 healthy controls. METHODS: Patients with BSCR and healthy controls underwent imaging of the macula in both eyes with a swept-source optical coherence tomography device (DRI-OCT1 Atlantis; Topcon). Images were exported from the device, and analysis was performed by 2 graders in the Doheny Image Reading Center using Image J software. The choroidal thickness at the foveal center was measured. In addition, the inner and outer boundaries of the choroid and retinal pigment epithelium (RPE) as well as the inner retinal surface all were segmented to allow the brightness and reflectivity of the pixels in the choroid, RPE band, and overlying vitreous to be quantified. An adjusted or normalized choroidal reflectivity, with the RPE as the bright reference standard and the vitreous as the dark reference standard, was computed using the formula: normalized choroidal reflectivity = (choroidal reflectivity-vitreous reflectivity)/RPE reflectivity. MAIN OUTCOME MEASURES: Choroidal reflectivity and choroidal thickness. RESULTS: Three hundred eighty-six eyes in the BSCR group and 59 eyes in the control group were included in this analysis. Higher choroidal reflectivity and lower choroidal thickness were documented in inactive BSCR patients compared with active BSCR and controls (P < 0.01). Active BSCR patients showed lower choroidal thickness compared with controls (P < 0.01). There was a negative correlation between choroidal reflectivity and choroidal thickness (r = -0.793; P < 0.001). On multiple regression analysis, choroidal thickness, age, and disease duration (all P < 0.01) all were significant predictors of choroidal reflectivity. CONCLUSIONS: Choroidal reflectivity and choroidal thickness changes are evident in active and inactive BSCR patients. Novel choroidal parameters such as choroidal reflectivity may warrant further study in the setting of BSCR.
PURPOSE: To characterize choroidal thickness and choroidal reflectivity in the eyes of patients with birdshot chorioretinopathy (BSCR). DESIGN: Cross-sectional observational study. PARTICIPANTS: Two hundred twenty BSCR patients and 59 healthy controls. METHODS:Patients with BSCR and healthy controls underwent imaging of the macula in both eyes with a swept-source optical coherence tomography device (DRI-OCT1 Atlantis; Topcon). Images were exported from the device, and analysis was performed by 2 graders in the Doheny Image Reading Center using Image J software. The choroidal thickness at the foveal center was measured. In addition, the inner and outer boundaries of the choroid and retinal pigment epithelium (RPE) as well as the inner retinal surface all were segmented to allow the brightness and reflectivity of the pixels in the choroid, RPE band, and overlying vitreous to be quantified. An adjusted or normalized choroidal reflectivity, with the RPE as the bright reference standard and the vitreous as the dark reference standard, was computed using the formula: normalized choroidal reflectivity = (choroidal reflectivity-vitreous reflectivity)/RPE reflectivity. MAIN OUTCOME MEASURES: Choroidal reflectivity and choroidal thickness. RESULTS: Three hundred eighty-six eyes in the BSCR group and 59 eyes in the control group were included in this analysis. Higher choroidal reflectivity and lower choroidal thickness were documented in inactive BSCR patients compared with active BSCR and controls (P < 0.01). Active BSCR patients showed lower choroidal thickness compared with controls (P < 0.01). There was a negative correlation between choroidal reflectivity and choroidal thickness (r = -0.793; P < 0.001). On multiple regression analysis, choroidal thickness, age, and disease duration (all P < 0.01) all were significant predictors of choroidal reflectivity. CONCLUSIONS: Choroidal reflectivity and choroidal thickness changes are evident in active and inactive BSCR patients. Novel choroidal parameters such as choroidal reflectivity may warrant further study in the setting of BSCR.
Authors: Hao Zhou; Yining Dai; Giovanni Gregori; Philip R Rosenfeld; Jacque L Duncan; Daniel M Schwartz; Ruikang K Wang Journal: Biomed Opt Express Date: 2020-03-06 Impact factor: 3.732
Authors: Elodie Bousquet; Pierre Duraffour; Louis Debillon; Swathi Somisetty; Dominique Monnet; Antoine P Brézin Journal: J Clin Med Date: 2022-08-16 Impact factor: 4.964
Authors: Laura J Kopplin; Marion Munk; Justin Baynham; James T Rosenbaum; Eric B Suhler; Kristin Biggee; Debra A Goldstein; Phoebe Lin Journal: J Vitreoretin Dis Date: 2019-07-01