Using key informants to estimate prevalence of severe visual impairment and blindness in children in Cross River State, Nigeria

Duke, Roseline; Otong, Eyoawan; Iso, Maureen; Okorie, Uche; Ekwe, Asuquo; Courtright, Paul; Lewallen, Susan

doi:10.1016/j.jaapos.2013.05.004

Cited by 28 publications

(18 citation statements)

References 19 publications

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“…Twenty studies reported data on prevalence [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] and four studies reported incidence. [35][36][37][38] The included studies represented five geographical regions including Europe and Central Asia (n = 8), South Asia (n = 3), East Asia and Pacific (n = 8), Sub-Saharan Africa (n = 3), and North America (n = 2).…”

Section: Resultsmentioning

confidence: 99%

Global prevalence of childhood cataract: a systematic review

Sheeladevi

Lawrenson

Fielder

et al. 2016

Eye

234

140

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Childhood cataract is an avoidable cause of visual disability worldwide and is a priority for VISION 2020: The Right to Sight. There is a paucity of information about the burden of cataract in children and the aim of this review is to assess the global prevalence of childhood cataract. The methodology for the review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We performed a literature search for studies reporting estimates of prevalence or incidence of cataract among children (agedo18 years) at any global location using the Cochrane Library, Medline and Embase up to January 2015. No restrictions were imposed based on language or year of publication. Study quality was assessed using a critical appraisal tool designed for systematic reviews of prevalence. Twenty prevalence and four incidence studies of childhood cataract from five different geographical regions were included. The overall prevalence of childhood cataract and congenital cataract was in the range from 0.32 to 22.9/10000 children (median = 1.03) and 0.63 to 9.74/10000 (median = 1.71), respectively. The incidence ranged from 1.8 to 3.6/10000 per year. The prevalence of childhood cataract in low-income economies was found to be 0.42 to 2.05 compared with 0.63 to 13.6/10000 in high-income economies. There was no difference in the prevalence based on laterality or gender. This review highlights substantial gaps in the epidemiological knowledge of childhood cataract worldwide, particularly from low and lower middle-income economies. More studies are needed using standard definitions and case ascertainment methods with large enough sample sizes.

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Section: Resultsmentioning

confidence: 99%

Global prevalence of childhood cataract: a systematic review

Sheeladevi

Lawrenson

Fielder

et al. 2016

Eye

234

140

View full text Add to dashboard Cite

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“…In Calabar, southern Nigeria, which has a CEHTF, cataract blindness is still the most common cause of avoidable blindness 12. The reasons for failure of uptake of cataract surgery in children include ignorance about the condition, ineffectual reference linkages, and financial barriers 16…”

Section: Discussionmentioning

confidence: 99%

“…These geographical differences were collaborated by population based studies using the key informant methodology- northwest zone (2008) corneal opacity 55%, cataract 15%11 and south-south zone (2011) cataract 35% and cornea 19% 12…”

Section: Introductionmentioning

confidence: 99%

Causes and emerging trends of childhood blindness: findings from schools for the blind in Southeast Nigeria

2014

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“…These aforementioned factors are not far-fetched, especially within the African setting where alternative medicine is still considered a suitable option for the average person. 18,19 Knowing the psychosocial perception of Ghanaians towards spectacle wear could inform professionals on the way forward and how to address these perceptions since the use of spectacle correction still remains one of the most cost-effective means of correcting refractive errors. This research therefore sought to determine the psychosocial perception of Ghanaian undergraduates to spectacle wear.…”

Section: Introductionmentioning

confidence: 99%