Rapid assessment of avoidable blindness in Papua New Guinea: a nationwide survey

Lee, Ling; D’Esposito, Fabrizio; Garap, Jambi; Wabulembo, Geoffrey; Koim, Samuel Peter; Keys, Drew; Cama, Anaseini; Limburg, Hans; Burnett, Anthea

doi:10.1136/bjophthalmol-2017-311802

Cited by 21 publications

(28 citation statements)

References 18 publications

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“…Results of RAAB study have been reported elsewhere 7. As diabetes was predicted to be a concerning issue in PNG urban areas, the DR assessment was only completed in the NCD region.…”

Section: Methodsmentioning

confidence: 99%

Rapid assessment of avoidable blindness and diabetic retinopathy in people aged 50 years and older in the National Capital District of Papua New Guinea

et al. 2018

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“…Results of RAAB study have been reported elsewhere 7. As diabetes was predicted to be a concerning issue in PNG urban areas, the DR assessment was only completed in the NCD region.…”

Section: Methodsmentioning

confidence: 99%

Rapid assessment of avoidable blindness and diabetic retinopathy in people aged 50 years and older in the National Capital District of Papua New Guinea

et al. 2018

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“…Among the 446 participants with an expert examination indicating VA greater than +0. 5 participants with VA results ≤+0.5 logMAR were recommended to the local eye clinics for follow-up examinations, only 24.7% (19/77) went to the clinic for further examination 6 months later. Table 3 shows the demographic information of family screeners from 523 household.…”

Section: Resultsmentioning

confidence: 99%

Validity and feasibility of a self-administered home vision examination in Yueqing, China: a cross-sectional study

Lohfeld

et al. 2020

BMJ Open

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ObjectiveTo investigate the validity and feasibility of a self-administered home vision examination programme in China.DesignCross-sectional study.SettingYueqing, China.ParticipantsA two-stage convenience sampling procedure was used to randomly select 600 households from 30 communities participating in the Yueqing Eye Study (YES). The aim of YES is to encourage home-based vision screening, reporting of visual acuity (VA) annually through social media and encouraging people to attend follow-up clinic appointments as a way to improve eye care access for adults with VA ≤+0.5 log of the minimum angle of resolution (logMAR).InterventionsHousehold screeners (one per household) who tested other family members’ VA completed a questionnaire on family structure, demographic information and knowledge about screening procedures. Other family members then underwent confirmatory VA testing by researchers.Outcome measuresThe completion rate of home-based VA screening, its sensitivity and specificity were used to evaluate validity. Factors that determined whether families participated in the self-VA screening were used to evaluate feasibility.Results345 (66%) of the 523 (87.2%) households with valid data form their home-based vision examinations also were retested by researchers. There was no statistically significant difference in scores on the family-administerd or researcher-administerd VA test (VA≤+0.5 logMAR, p=0.607; VA >+0.5 logMAR, p=0.612). The sensitivity and specificity of home-based vision screening were 80.5% (95% CI 70.2% to 86.9%) and 95.1% (95% CI 92.6% to 96.8%), respectively. 14.7% (77/523) of tested respondents had VA ≤+0.5 logMAR. Predictors of performing home screening for VA remaining in regression models included higher economic status (‘fair and above’ vs ‘poor’: OR 1.74; 95% CI 1.08 to 2.76; p=0.022), age (<45 years vs ≥45 years: OR 0.46; 95% CI 0.25 to 0.85; p=0.014) and living in a nuclear (OR 5.17; 95% CI 2.86 to 9.36; p<0.001) or extended family (OR 8.37; 95% CI 4.93 to 14.20; p<0.001).ConclusionSelf-administered home vision screening is reliable and highly accepted by Chinese adults.

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“…Trachoma was not mentioned in this study [ 35 ]. During a Rapid Assessment of Avoidable Blindness in PNG, one case of trachomatous corneal opacity was found among 4818 survey participants aged ≥50 years from across the country, accounting for 0.8% of cases of blindness [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

A systematic review of historical and contemporary evidence of trachoma endemicity in the Pacific Islands

Handley

Butcher

2018

PLoS ONE

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IntroductionTrachoma is endemic in several Pacific Island countries. The aims of this study were to (a) identify future trachoma mapping needs in the Pacific and (b) to examine whether any temporal trends in trachoma prevalence could be ascertained from the historical literature on trachoma in the Pacific Islands.MethodsHuman studies of trachoma and eye care in the Pacific Islands were identified from a systematic search of PubMed, EMbase, Scopus and Web of Science databases. A published quality assessment system for disease prevalence studies was modified to assess studies for quality and transparency.ResultsFew general ophthalmic studies in the Pacific mention trachoma. In targeted studies of trachoma, cases have consistently been identified throughout the Pacific since the early twentieth century. The largest number of studies come from Papua New Guinea and Fiji, whereas some countries have no published data on trachoma. The majority of studies identified were published before the Alliance for the Global Elimination of Trachoma 2020 was convened, so lack the standardisation of population-based mapping which has been implemented in the past decade.ConclusionsPopulation-based trachoma prevalence estimates have been recently generated in Papua New Guinea, Solomon Islands, Vanuatu, Kiribati and Fiji. There is insufficient evidence to assess whether there has been temporal change in trachoma prevalence in these countries over the past century. Cases of trachoma have been identified in some countries (for example, Nauru and Samoa) which have no recent population-based mapping data, but may be at risk of trachoma endemcitiy. Deployment of appropriate mapping strategies is warranted to identify whether interventions are required.

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Rapid assessment of avoidable blindness in Papua New Guinea: a nationwide survey

Abstract: PNG has one of the highest reported prevalence of blindness globally. Cataract and uncorrected refractive error are the main causes, suggesting a need for increased accessible services with improved resources and advocacy for enhancing eye health literacy.

Cited by 21 publications

References 18 publications

Rapid assessment of avoidable blindness and diabetic retinopathy in people aged 50 years and older in the National Capital District of Papua New Guinea

Rapid assessment of avoidable blindness and diabetic retinopathy in people aged 50 years and older in the National Capital District of Papua New Guinea

Validity and feasibility of a self-administered home vision examination in Yueqing, China: a cross-sectional study

A systematic review of historical and contemporary evidence of trachoma endemicity in the Pacific Islands

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