Prevalence, ethnic differences and risk factors of primary angle-closure glaucoma in a multiethnic Chinese adult population: the Yunnan Minority Eye Study

2021 ◽  
pp. bjophthalmol-2021-320241
Author(s):  
Ying Wang ◽  
Qing Cun ◽  
Jun Li ◽  
Wei Shen ◽  
Wen-Yan Yang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Ethnic Differences ◽  
Adult Population ◽  
Geographical Location ◽  
Significant Risk ◽  
Principal Component ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

PurposeTo describe the prevalence and risk factors of primary angle-closure glaucoma (PACG) and to explore nationality difference in Chinese.MethodsThe Yunnan Minority Eye Study was conducted in a rural multiethnic area in Yunnan province and included 6546 participants aged over 50 years. PACG was diagnosed based on International Society of Geographical and Epidemiologic Ophthalmology criteria by experienced ophthalmologists. Multivariate regression modelling was conducted to examine risk factors for PACG. Principal component analyis (PCA) was performed to evaluate the effects of ethnicity on PACG.ResultsThe overall prevalence of PACG was 0.7% (95% CIs: 0.5% to 0.9%). PCA indicated that ethnicity is significantly related to the presence of PACG (p<0.001) after controlling for other risk factors. In addition, higher PACG prevalence was also correlated with older age (60–69 years group (OR: 3.47; 95% CI: 1.11 to 10.84; p<0.05) and 70–79 years group (OR: 4.71; 95% CI: 1.40 to 15.86; p<0.05) as compared with 50–59 years group), higher intraocular pressures (OR: 1.26; 95% CI: 1.17 to 1.36; p<0.001), shorter axial lengths (OR: 0.42; 95% CI: 0.32 to 0.56; p<0.001) and thinner central corneal thicknesses (OR: 0.89; 95% CI: 0.81 to 0.99; p<0.05).ConclusionsThis multiethnic study on Chinese adults living in the same geographical location indicated that ethnicity is a significant risk factor for PACG. However, there were still some of the effects of ethnic differences on the prevalence of PACG that could not be explained and further studies should take culture and lifestyle factors into account.

Integration of Genetic and Biometric Risk Factors for Detection of Primary Angle Closure Glaucoma

2019 ◽  
Vol 208 ◽  
pp. 160-165 ◽  
Author(s):  
Monisha E. Nongpiur ◽  
Chiea-Chuen Khor ◽  
Ching-Yu Cheng ◽  
Rahat Husain ◽  
Pui Yi Boey ◽  
...  
Keyword(s):  
Risk Factors ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma

scholarly journals Ten-year incidence of primary angle closure in elderly Chinese: the Liwan Eye Study

2018 ◽  
Vol 103 (3) ◽  
pp. 355-360 ◽  
Author(s):  
Lanhua Wang ◽  
Wenyong Huang ◽  
Shengsong Huang ◽  
Jian Zhang ◽  
Xinxing Guo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Incident Angle ◽  
Significant Risk ◽  
Anterior Chamber Depth ◽  
Angle Closure ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Study Participants ◽  
Angle Width

PurposeTo determine the 10-year incidence of all forms of primary angle closure (PAC) in phakic eyes and its risk factors in an urban Chinese population aged 50 years and older.MethodsSurvivors of 1405 baseline participants were invited to attend the 10-year follow-up visit in the Liwan Eye Study. Participants with established baseline angle closure, including primary angle closure suspects (PACS), PAC and primary angle closure glaucoma (PACG), or those who underwent bilateral cataract surgery during the 10-year period, as well as those who did not tolerate gonioscopic examinations, were excluded from this analysis. Incident PAC was present when those with open angles at baseline developed angle closure in any form in either eye during the 10-year period.ResultsAmong 791 participants who returned during the 10-year follow-up visit, 620 (78.4%) provided data on PAC incidence. The 10-year cumulative incidence of any forms of PAC was 20.5% (127/620, 95% CI 17.4% to 24.9%), including 16.9%, 2.4% and 1.1% with incident PACS, PAC and PACG in either eye, respectively. In multiple logistic regression, significant risk factors for incident angle closure were greater baseline lens thickness (OR=1.82 per mm, p=0.003), shallower anterior chamber depth (OR=3.18 per mm decreased, p=0.010) and narrower angle width (OR=1.63 per decreased angle width, p<0.0001).ConclusionsApproximately one in five people aged 50 years and older developed some form of angle closure over a 10-year period. Small ocular dimensions and hyperopia at baseline were associated with the development of angle closure.

scholarly journals Prevalence of Primary Angle Closure Glaucoma in the Last 20 Years: A Meta-Analysis and Systematic Review

2021 ◽  
Vol 7 ◽  
Author(s):  
Nan Zhang ◽  
Jiaxing Wang ◽  
Biyue Chen ◽  
Ying Li ◽  
Bing Jiang
Keyword(s):  
Risk Factors ◽  
Systematic Review ◽  
Meta Analysis ◽  
Population Based ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Cross Sectional ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Pooled Prevalence

Purpose: This meta-analysis aims to investigate the worldwide prevalence of primary angle-closure glaucoma (PACG) and its risk factors in the last 20 years.Methods: We conducted a systematic review and meta-analysis of 37 population-based studies and 144,354 subjects. PubMed, Embase, and Web of Science databases were searched for cross-sectional or cohort studies published in the last 20 years (2000–2020) that reported the prevalence of PACG. The prevalence of PACG was analyzed according to various risk factors. A random-effects model was used for the meta-analysis.Results: The global pooled prevalence of PACG was 0.6% [95% confidence interval (CI) = 0.5–0.8%] for the last 20 years. The prevalence of PACG increases with age. Men are found less likely to have PACG than women (risk ratio = 0.71, 95% CI = 0.53–0.93, p &lt; 0.01). Asia is found to have the highest prevalence of PACG (0.7%, 95% CI = 0.6–1.0%). The current estimated population with PACG is 17.14 million (95% CI = 14.28–22.85) for people older than 40 years old worldwide, with 12.30 million (95% CI = 10.54–17.57) in Asia. It is estimated that by 2050, the global population with PACG will be 26.26 million, with 18.47 million in Asia.Conclusion: PACG affects more than 17 million people worldwide, especially leading a huge burden to Asia. The prevalence of PACG varies widely across different ages, sex, and population geographic variation. Asian, female sex, and age are risk factors of PACG.

Prevalence and risk factors for primary angle-closure disease spectrum: The Colombian glaucoma study

2021 ◽  
pp. 112067212110601
Author(s):  
Alexander M Martínez-Blanco ◽  
Erika J Cantor ◽  
Claudia Valencia-Peña
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factors ◽  
Angle Closure Glaucoma ◽  
Angle Closure ◽  
Systemic Hypertension ◽  
Primary Angle Closure ◽  
Primary Angle Closure Glaucoma ◽  
Disease Spectrum ◽  
Diagnosis Of Diabetes Mellitus ◽  
High Hyperopia

Purpose To estimate the prevalence and risk factors associated with the primary angle-closure disease spectrum in participants of the Colombian Glaucoma Study. Methods A cross-sectional study in subjects older than 50 years with a diagnosis of diabetes mellitus or/and systemic hypertension was conducted in Colombia to estimate glaucoma prevalence. This study included 1749 patients and classified them using gonioscopy into either open-angle or primary angle-closure disease spectrum groups. The patients in the primary angle-closure disease spectrum group were then subdivided into the following categories: primary angle-closure suspect, primary angle-closure, and primary angle-closure glaucoma. A logistic regression model was carried out to identify factors related to the primary angle-closure disease spectrum, including age, sex, height, and refraction. Results The prevalence of primary angle-closure disease spectrum was 19.3% (338) (95% CI: 17.5–21.2). The prevalence of primary angle-closure suspect, primary angle-closure, and primary angle-closure glaucoma was 8.0% (140) (95% CI: 6.8–9.4), 10.1% (176) (95% CI: 8.7–11.6), and 1.2% (22) (95% CI: 0.8–1.9), respectively. In the multivariate analysis, advanced age (+80 years), female sex, and high hyperopia ( p = 0.000, 0.021, and 0.001, respectively) were identified as independent factors related to the primary angle-closure disease spectrum. Conclusion A high prevalence of primary angle-closure disease spectrum was found in Colombian patients with a diagnosis of diabetes mellitus or/and systemic hypertension, especially primary angle-closure and primary angle-closure glaucoma. Age, female sex, and high hyperopia were identified as risk factors for the primary angle-closure disease spectrum.

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