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Kim YH, Yun C, Oh J. Integrity of the Hyperreflective Layer in the Inner Choroid in Eyes with Drusen. Ophthalmol Ther 2024; 13:529-540. [PMID: 38113024 PMCID: PMC10787704 DOI: 10.1007/s40123-023-00865-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/23/2023] [Indexed: 12/21/2023] Open
Abstract
INTRODUCTION This study aimed to compare the integrity of the hyperreflective layer of the inner choroid in eyes with and without drusen. METHODS Swept-source optical coherence tomography images of patients with drusen and normal controls were reviewed. Using a line plot of ImageJ, choroidal reflectivity was measured at the subfovea, and the integrity of the hyperreflective layer of the inner choroid was determined. RESULTS In total, 63 eyes with drusen and 30 control eyes without drusen were included. The integrity of the hyperreflective layer of the inner choroid was preserved in 81.0% of eyes with drusen and 93.3% of normal controls. The proportion of eyes with the hyperreflective layer did not differ between eyes with and without drusen. Of the 63 subjects with drusen, this hyperreflective layer was observed in all 28 eyes (100%) with pachydrusen but only in 68.6% of the 35 eyes with soft drusen, and its prevalence was significantly different (P = 0.001). CONCLUSION The prevalence of the hyperreflective layer between the choriocapillaris and medium or large choroidal vessels in eyes with soft drusen differed from that in eyes with pachydrusen. These findings support the suggestion that changes within the choroidal stroma may be involved in the pathogenesis of age-related macular degeneration.
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Affiliation(s)
- Young Ho Kim
- Department of Ophthalmology, Korea University College of Medicine, 73 Goryeodae-ro Sungbuk-ku, Seoul, 02841, Korea
| | - Cheolmin Yun
- Department of Ophthalmology, Korea University College of Medicine, 73 Goryeodae-ro Sungbuk-ku, Seoul, 02841, Korea
| | - Jaeryung Oh
- Department of Ophthalmology, Korea University College of Medicine, 73 Goryeodae-ro Sungbuk-ku, Seoul, 02841, Korea.
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Liu P, Fang H, An G, Jin B, Lu C, Li S, Yang F, Du L, Jin X. Chronic Central Serous Chorioretinopathy in Elderly Subjects: Structure and Blood Flow Characteristics of Retina and Choroid. Ophthalmol Ther 2024; 13:321-335. [PMID: 37966697 PMCID: PMC10776535 DOI: 10.1007/s40123-023-00849-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/30/2023] [Indexed: 11/16/2023] Open
Abstract
INTRODUCTION With advancements in imaging technology, researchers have been able to identify more distinctive imaging features of central serous chorioretinopathy (CSC). However, existing research primarily concentrates on young patients aged 50 years and below, leaving a dearth of studies on elderly CSC patients. Previous studies indicate that elderly CSC patients may exhibit unique imaging characteristics and have a clinical prognosis that significantly differs from younger patients. This study aimed to evaluate the characteristics of retina, choroid structure, and blood flow in elderly patients with chronic CSC (cCSC) examined multimode imaging and try to find new pathogenesis information of it. METHODS Using a cut-off age of 50 years, patients with chronic central serous chorioretinopathy were divided into two groups: older and younger. The control group consisted of 40 healthy individuals, with their right eyes assigned. Various clinical features were recorded, including the incidence of ellipsoid zone rupture (EZ-), fibrin in the subretinal fluid (SRF), pachydrusen, subretinal drusenoid deposits (SDD), pigment epithelial detachment (PED), double-layer sign (DLS), and choroidal lipid globule cavern. Measurements were taken for the thickness of the outer nuclear layer (ONL), the length of the extended outer photoreceptor segment (POS), the height and width of SRF, the vascular density of each layer of the retinal capillary plexus, the central macular thickness (CMT), and the subfoveal choroidal thickness (SFCT). RESULTS The proportion of females in the elderly group (43.75%) was significantly higher than that in the youth group (22.41%) (p = 0.034). The degree of hyperopia in the elderly group (1.03 ± 0.73) was higher than that in the youth group (0.26 ± 1.06), with a significant difference in BCVA (p = 0.05). The thickness of SFCT, CMT, ONL in the elderly group, and the length of photoreceptor outer segment in the elderly group were thinner than those in the youth group (p < 0.05). Choroidal capillary perfusion area (CCPA), macular area, and paramacular area were lower in the elderly group than those in the youth group in the full scan range (p < 0.05). The blood flow densities of deep capillary plexus (DCP), intermediate capillary plexus (ICP), and superficial capillary plexus (SCP) in the whole scan range, macular area, and paramacular area were lower in the elderly group than in the youth group, but the differences were not statistically significant. CONCLUSIONS In conclusion, our data suggest that elderly patients with cCSC may experience different disease outcomes. Elderly cCSC patients exhibit less gender bias, poorer vision, more severe structural damage and ischemia in the choroid and retina, and have a higher risk of developing choroidal neovascularization.
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Affiliation(s)
- Pei Liu
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Haixin Fang
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Guangqi An
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Bo Jin
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
- Fundus Disease Institute of Zhengzhou University, Zhengzhou, 450000, China
| | - Chenyu Lu
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Shu Li
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Fan Yang
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China
- Henan Eye Hospital, Zhengzhou, 450000, China
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China
| | - Liping Du
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China.
- Henan Eye Hospital, Zhengzhou, 450000, China.
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China.
- Fundus Disease Institute of Zhengzhou University, Zhengzhou, 450000, China.
| | - Xuemin Jin
- Department of Ophthalmology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, China.
- Henan Eye Hospital, Zhengzhou, 450000, China.
- Academy of Medical Science of Zhengzhou University, Zhengzhou, 450000, China.
- Fundus Disease Institute of Zhengzhou University, Zhengzhou, 450000, China.
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Kang HG, Han JY, Kim M, Byeon SH, Kim SS, Koh HJ, Lee CS. Pachydrusen, choroidal vascular hyperpermeability, and punctate hyperfluorescent spots. Graefes Arch Clin Exp Ophthalmol 2021; 259:2391-2400. [PMID: 33907882 DOI: 10.1007/s00417-021-05180-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/11/2021] [Accepted: 04/01/2021] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To investigate the relationship between pachydrusen and features of choroidal vascular hyperpermeability (CVH) and punctate hyperfluorescent spots (PHS) on serial imaging in patients with polypoidal choroidal vasculopathy (PCV) or pachychoroid neovasculopathy (PNV). METHODS Patients diagnosed between January 2007 and June 2016 at 2 high-volume, tertiary hospitals were retrospectively reviewed with serial multimodal imaging assessment. The primary outcome was the association between drusen subtypes (hard/soft drusen, subretinal drusenoid droplets, or pachydrusen) with CVH and PHS, previously described in central serous chorioretinopathy. RESULTS Among the 105 eyes (105 patients; mean age, 67.0 years), 87 (82.9%) were diagnosed with PCV and 18 (17.1%) with PNV. Pachydrusen was the most frequently identified subtype (54 eyes, 51.4%). CVH (72.2% vs 41.4%, P = 0.021) and PHS (72.2% vs 44.8%, P = 0.041) were observed with greater frequency in PNV eyes. Significant correlations were found between CVH and PHS (phi coefficient φ 0.30, P = 0.003), and PHS with pachydrusen (φ 0.20, P = 0.040). Over a mean follow-up of 74.8 months, new drusen co-localizing to PHS were noted in 22 (21.0%) eyes (φ 0.54, P < 0.001). CONCLUSION We observed a trend of pachydrusen appearing in conjunction with PHS in PCV or PNV. Frequent localization of new drusen to these choroidal lesions was observed over long-term follow-up. PHS may be a form of late-staining "forme fruste" drusen, possibly associated with micro-ischemic changes to the choriocapillaris.
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Affiliation(s)
- Hyun Goo Kang
- Department of Ophthalmology, Institute of Vision Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Eonjuro 211, Gangnam-gu, Seoul, Republic of Korea
- Translational Genome Informatics Laboratory, Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Yonsei-ro 50-1, Seodaemun-gu, Seoul, Republic of Korea
| | - Jae Yong Han
- Department of Ophthalmology, Institute of Vision Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Eonjuro 211, Gangnam-gu, Seoul, Republic of Korea
| | - Min Kim
- Department of Ophthalmology, Institute of Vision Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Eonjuro 211, Gangnam-gu, Seoul, Republic of Korea
| | - Suk Ho Byeon
- Department of Ophthalmology, Institute of Vision Research, Severance Eye Hospital, Yonsei University College of Medicine, 50-1 Yonse-iro, Seodaemun-gu, Seoul, Republic of Korea, 03722
| | - Sung Soo Kim
- Department of Ophthalmology, Institute of Vision Research, Severance Eye Hospital, Yonsei University College of Medicine, 50-1 Yonse-iro, Seodaemun-gu, Seoul, Republic of Korea, 03722
| | - Hyoung Jun Koh
- Department of Ophthalmology, Institute of Vision Research, Severance Eye Hospital, Yonsei University College of Medicine, 50-1 Yonse-iro, Seodaemun-gu, Seoul, Republic of Korea, 03722
| | - Christopher Seungkyu Lee
- Department of Ophthalmology, Institute of Vision Research, Severance Eye Hospital, Yonsei University College of Medicine, 50-1 Yonse-iro, Seodaemun-gu, Seoul, Republic of Korea, 03722.
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Takahashi A, Hosoda Y, Miyake M, Miyata M, Oishi A, Tamura H, Ooto S, Yamashiro K, Tabara Y, Matsuda F, Tsujikawa A. Clinical and Genetic Characteristics of Pachydrusen in Eyes with Central Serous Chorioretinopathy and General Japanese Individuals. Ophthalmol Retina 2020; 5:910-917. [PMID: 33309963 DOI: 10.1016/j.oret.2020.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 11/26/2020] [Accepted: 12/07/2020] [Indexed: 12/17/2022]
Abstract
PURPOSE To survey the prevalence and clinical and genetic characteristics of pachydrusen in eyes with central serous chorioretinopathy (CSC) and those of Japanese individuals in the general population. DESIGN Prospective, observational cohort study. PARTICIPANTS One thousand thirty-seven Japanese patients were included in this study. Three hundred seven patients (614 eyes) had treatment-naïve CSC without choroidal neovascularization in either eye, whereas 730 individuals (1640 eyes) were Japanese individuals from the general population without explicit ocular diseases. METHODS Pachydrusen were detected using color fundus photography, and subfoveal choroidal thickness was measured using OCT. Genotypic distributions of 3 single nucleotide polymorphisms, ARMS2 A69S, CFH I62V, and CFH Y402H, were evaluated. MAIN OUTCOME MEASURES Prevalence of pachydrusen and association with choroidal thickness. RESULTS The prevalence of pachydrusen was significantly higher among CSC patients than among the general population group (40.1% vs. 15.6%; P < 0.001). Individuals with pachydrusen in either group were significantly older than those without pachydrusen (CSC patients: 62.1 years vs. 48.8 years [P < 0.001]; general individuals: 70.3 years vs. 51.9 years [P < 0.001]). No significant difference was found in subfoveal choroidal thickness between those with and without pachydrusen (CSC patients: 370 μm vs. 375 μm; [P = 0.574]; general population: 297 μm vs. 303 μm [P = 0.521]). However, after adjusting for age, gender, and refractive error, subfoveal choroidal thickness was notably thicker in individuals with pachydrusen than that in individuals without pachydrusen in both groups (P = 0.003 and P = 0.013, respectively). No significant difference was found in genotype distributions between CSC patients with pachydrusen and those without it; whereas, the T allele frequency of ARMS2 A69S was higher in general population individuals with pachydrusen than that in general population individuals without pachydrusen (42.2% vs. 33.9%; P < 0.001; OR, 1.86, adjusted for age, gender, and choroidal thickness). CONCLUSIONS Pachydrusen was observed more frequently in CSC patients compared with individuals from the general population. In both groups, pachydrusen was associated with a thicker choroid, suggesting that pachydrusen should be considered as a significant sign of pachychoroid.
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Affiliation(s)
- Ayako Takahashi
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
| | - Yoshikatsu Hosoda
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masahiro Miyake
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Manabu Miyata
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akio Oishi
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hitoshi Tamura
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sotaro Ooto
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kenji Yamashiro
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yasuharu Tabara
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Fumihiko Matsuda
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akitaka Tsujikawa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Castro-Navarro V, Behar-Cohen F, Chang W, Joussen AM, Lai TYY, Navarro R, Pearce I, Yanagi Y, Okada AA. Pachychoroid: current concepts on clinical features and pathogenesis. Graefes Arch Clin Exp Ophthalmol 2020; 259:1385-1400. [PMID: 33057904 PMCID: PMC8166704 DOI: 10.1007/s00417-020-04940-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/28/2020] [Accepted: 09/17/2020] [Indexed: 01/02/2023] Open
Abstract
PURPOSE The term "pachychoroid" refers to a newly described phenotype in which functional and structural choroidal changes are thought to play a key pathogenic role in a spectrum of related retinal disorders. A more detailed understanding of how the choroid is involved within this spectrum and a better knowledge of the most relevant clinical signs of the pachychoroid phenotype are important to differentiate these disorders from other retinal conditions. Our objectives are to provide a literature review of pachychoroid and the commonalities that may be present across pathologies included in the spectrum, and to provide details on the examination, monitoring, and management of these disorders. METHODS We searched the PubMed web platform to identify relevant studies using the following keywords: pachychoroid, pachychoroid pigment epitheliopathy, pachychoroid neovasculopathy, aneurysmal type 1 neovascularization, focal choroidal excavation, peripapillary pachychoroid syndrome, vasculopathy pachysclera, pachychoroid geographic atrophy, and pachydrusen. We selected 157 publications and identified the most important features related to pachychoroid. RESULTS The presence of hypertrophic or congested vessels in the choroid, not thickened choroid per se, under an area of reduced or absent choriocapillaris in the posterior pole seems to be the most salient feature of pachychoroid. However, other qualitative/quantitative features are needed to differentiate the uncomplicated pachychoroid from the pathological pachychoroid clinical spectrum, which may be associated with exudation, neovascularization, and/or retinal pigment epithelium and photoreceptor atrophy. CONCLUSIONS The most salient feature of pachychoroid appears to be the presence of large vessels under an area of reduced or absent choriocapillaris. Knowledge of the features and pathogenesis of the different disorders in the pachychoroid spectrum may assist in the management of patients.
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Affiliation(s)
| | - Francine Behar-Cohen
- Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Ophtalmopole, Paris, France.,Centre de Recherche des Cordeliers UMRS1138, INSERM, Paris, France
| | | | | | - Timothy Y Y Lai
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | | | - Ian Pearce
- Royal Liverpool University Hospital, Liverpool, UK
| | - Yasuo Yanagi
- Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan.,Singapore National Eye Centre, Singapore, Singapore
| | - Annabelle A Okada
- Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan.
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Sasaki M, Ito Y, Yamasaki T, Yanagi Y, Gemmy Cheung CM, Motomura K, Kawakami S, Kinoshita T, Yuki K, Hanyuda A, Mimura M, Sawada N, Tsugane S, Tsubota K. Association of Choroidal Thickness with Intermediate Age-Related Macular Degeneration in a Japanese Population. Ophthalmol Retina 2020; 5:528-535. [PMID: 32896678 DOI: 10.1016/j.oret.2020.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/11/2020] [Accepted: 09/01/2020] [Indexed: 01/07/2023]
Abstract
PURPOSE To determine the relationship of choroidal thickness with the early stages of age-related macular degeneration (AMD) and their disease features in a Japanese population. DESIGN Cross-sectional survey. PARTICIPANTS A total of 1293 Japanese persons 65 to 86 years of age residing in the Saku area who underwent eye screening as part of the Japan Public Health Center-based Prospective Study. METHODS Comprehensive ophthalmic assessment included fundus photography, measurement of intraocular pressure, and determination of refractive status. OCT with enhanced depth imaging mode was performed and subfoveal choroidal thickness was assessed. Multinomial logistic regression models were used to assess the relationships of choroidal thickness with the early stages of AMD, namely early AMD and intermediate AMD, and their disease features, after adjustment for potential confounders. MAIN OUTCOME MEASURES Relationship of choroidal thickness with early AMD, intermediate AMD, and their disease features. RESULTS Of 1293 potential participants, 901 (mean age, 73.2 years) had choroidal thickness data, fundus photographs of sufficient quality, and no concomitant retinal disease (including 5 with late AMD). Mean choroidal thickness was 246.1 μm, 15.1% had early AMD, and 9.0% had intermediate AMD. After adjustment for age, gender, and refractive status, choroidal thickness was associated positively with presence of intermediate AMD (for each 1- standard deviation [SD] μm increase: odds ratio [OR], 1.43; 95% confidence interval [CI], 1.13-1.81), whereas no significant association was found with presence of early AMD. Among intermediate AMD features, choroidal thickness was associated positively with presence of AMD pigmentary abnormalities (associated with at least medium drusen; for each 1-SD μm increase: OR, 2.21; 95% CI, 1.42-3.42), whereas no significant association was found with presence of large drusen alone. In addition, among large drusen subtypes, choroidal thickness was associated positively with presence of pachydrusen (for each 1-SD μm increase: OR, 1.53; 95% CI, 1.10-2.13). Furthermore, exploratory analysis revealed that choroidal thickness was associated positively with presence of non-AMD pigmentary abnormalities (for each 1-SD μm increase: OR, 1.92; 95% CI, 1.31-2.18). CONCLUSIONS Choroidal thickness seems to be associated with the pathology of intermediate AMD and its features in Asians.
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Affiliation(s)
- Mariko Sasaki
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; Department of Ophthalmology, Tachikawa Hospital, Tokyo, Japan; Department of Ophthalmology, Tokyo Medical Center, Tokyo, Japan.
| | - Yoshikazu Ito
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; Department of Ophthalmology, Tachikawa Hospital, Tokyo, Japan
| | - Tomoyo Yamasaki
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Yasuo Yanagi
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore
| | - Chui Ming Gemmy Cheung
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore
| | - Kaoru Motomura
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Setsuko Kawakami
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Takamasa Kinoshita
- Department of Ophthalmology, Sapporo City General Hospital, Hokkaido, Japan
| | - Kenya Yuki
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Akiko Hanyuda
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Masaru Mimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Norie Sawada
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Shoichiro Tsugane
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
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