scholarly journals Blindness and visual impairment due to age-related cataract in sub-Saharan Africa: a systematic review of recent population-based studies

2013 ◽  
Vol 97 (10) ◽  
pp. 1237-1243 ◽  
Author(s):  
Andrew Bastawrous ◽  
William H Dean ◽  
Justin C Sherwin
Author(s):  
Antoine Gbessemehlan ◽  
Catherine Helmer ◽  
Cécile Delcourt ◽  
Farid Boumediene ◽  
Bébène Ndamba-Bandzouzi ◽  
...  

Abstract Background Visual impairment (VI) and determinants of poor cardiovascular health are very common in sub-Saharan Africa. However, we do not know whether these determinants are associated to VI among older adults in this region. This study aimed at investigating the association between the determinants of poor cardiovascular health and near VI among older adults living in Congo. Methods Participants were Congolese older adults aged ≥ 65 years included in EPIDEMCA-FU (Epidemiology of Dementia in Central Africa - Follow-up) population-based cohort. Near VI was defined as visual acuity < 20/40 measured at 30 cm. Associations between determinants of poor cardiovascular health collected at baseline and near visual acuity measured at 1 st follow-up were investigated using multivariable logistic regression models. Results Among the 549 participants included, 378 (68.8% [95% Confidence Interval: 64.9%-72.7%]) had near VI. Of the determinants of poor cardiovascular health explored, we found that having high BMI ≥ 25 kg/m 2 (Odds Ratio= 2.15 [95% CI: 1.25–3.68]), diabetes (OR=2.12 [95% CI: 1.06–4.25]) and hypertension (OR=1.65 [95% CI: 1.02–2.64]) were independently associated with near VI. Conclusions Several determinants of poor cardiovascular health were associated to near VI in this population. This study suggests that promoting a good cardiovascular health could represent a target for VI prevention among older adults.


2019 ◽  
Vol 24 (11) ◽  
pp. 1277-1290
Author(s):  
Alain M. Ngoma ◽  
Magot D. Omokoko ◽  
Paulin B. Mutombo ◽  
Eddy S. Mvika ◽  
Jeremie M. Muwonga ◽  
...  

Author(s):  
John E. Moyegbone ◽  
Ezekiel U. Nwose ◽  
Samuel D. Nwajei ◽  
Joseph O. Odoko ◽  
Emmanuel A. Agege ◽  
...  

The eyes being the most delicate organs as well as the window of the body to the world make it dysfunction a public health problem. The aim of this study is to review the epidemiology of visual impairment in relation to anaemia, antioxidant vitamins and nutritional status in order to identify and proffer appropriate solution to various factors associated with visual impairment. A systematic review and evaluation of published literatures globally, in sub Saharan Africa and in Nigeria was done through web search and Mendeley reference library. Findings showed that visual impairment increases with increase in age. Gender, race, geographical location, literacy level, income and culture are social demographic factors that influence visual impairment. Refractive error, cataract, glaucoma and age-related macula degeneration (ARMD) are the most common causes of visual impairment worldwide. Over 80% of visual impairment are preventable. Hence, early detection and prompt treatment especially at the primary health care level is the most effective ways to prevent visual impairment.


2021 ◽  
Author(s):  
Tshubelela Sello Simon Magakwe ◽  
Zamadonda Nokuthula Queen Xulu-Kasaba ◽  
Rekha Hansraj

Abstract BackgroundRefractive error (RE) is a leading cause of visual impairment (VI) in children, the most common cause of childhood handicaps, and the second leading cause of childhood blindness globally. Refractive error and/or VI limits the ability of a child to perform well at school, in most sporting activities which require good vision, and negatively affects the socio-economical security of an individual. These two conditions have also reported to impact quality of life (QoL). The epidemiological evidence about the prevalence and distribution of RE and VI, as well their impact on the QoL of school-going children in Sub-Saharan Africa (SSA), will assist policymakers and stakeholders involved in child eye care in channelling resources appropriately. The main objective of this scoping review study therefore is to map available evidence on RE and or VI and their impact on QoL of school-going children in SSA. Methods This systematic review study will follow the five steps outlined in a framework proposed by Arksey and O’Malley (2005). The literature search will be conducted using the following databases, EBSCOhost: CINAHL, Academic search complete, Health-Consumer and Health-Nursing, Google Scholar, Science direct and PubMed. The period of the literature will be from January 1998 to 31 December 2020, all suitable studies will be exported to a Mendeley library and in cases of outstanding articles the authors will be contacted directly. The title screening will be done by the principal investigator (PI), then the study will employ two independent reviewers which will have access to the Mendeley library to do abstract screening (AS) and a full article screening (FAS). Following FAS, data extraction will be done by PI. The quality index of all included studies will be determined using the Mixed Method Appraisal Tool (MMAT). The results will be reported using the Preferred Reporting Items for systematic reviews and Meta-Analyses (PRISMA). Discussion The evidence of this scoping review will guide policy makers and all stakeholders in planning intervention strategies to address this global issue. Furthermore, the results of this review will be published in a peer reviewed journal and will be used to guide future research in this and related areas. Systemic review registration: Submitted (PROSPERO) 27/04/2021


Author(s):  
Amanuel Tesfay Gebremedhin ◽  
Hailay Abrha Gesesew ◽  
Tariku Dejene Demissie ◽  
Mirkuzie Woldie Kerie ◽  
Morankar Sudhakar

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