Working with communities to improve their eye health.

As an eye health worker you will be aware of various community interventions for improving eye health. These can involve encouraging people to take better care of their eyes (e.g. specific behaviour change programmes such as encouraging hand and face washing and improving infant feeding practices) and projects that increase the number of people who make use of available services (e.g. encouraging older people to come for cataract surgery, conducting outreach programmes, providing services in the community, or mass drug distribution programmes)

Techniques to encourage people to take better care of their eye health.

This article provides information about specific techniques that you might use within your overall strategy, including examples of each technique and when to consider using it

How to empower communities to take action on improving eye health.

As discussed earlier in this issue, we cannot assume, once appropriate services are established or useful information has been shared, that community eye health will automatically improve. There are many reasons why communities may not adopt new, healthier habits or make use of recommended eye health services

Anxiety and depression in Guatemala: Sociodemographic characteristics and service access.

Epidemiological data on depression and anxiety in Guatemala is lacking. Using 2016 National Disability Survey data, we explored the sociodemographics of people with anxiety and/or depression and its heightened burden on access to key services. The survey (n = 13,073) used the Washington Group Extended Set to estimate disability prevalence, including anxiety and/or depression. A nested case-control study was included to explore the impact of disability on key life areas. Cases (indicating 'A lot of difficulty' or 'Cannot do' in one or more functional domain) and age-/sex-matched controls were administered a structured questionnaire. Multivariable logistic regression and heightened-burden analysis were conducted. Higher odds of anxiety and/or depression were found in participants who were 50+ (aOR 2.3, 1.8-3.1), female (aOR 1.8, 1.4-2.2), urban (aOR 1.5, 1.2-1.9), divorced/separated (aOR 2.0, 1.3-3.0), and widowed (aOR 1.6, 1.0-2.4), as well as those with impaired communication or cognition (aOR 17.6, 13.0-23.8), self-care (aOR 13.2, 8.5-20.5), walking (aOR 13.3, 9.7-18.3), hearing (aOR 8.5, 5.6-13.1), and vision (aOR 8.5, 6.1-11.8). Lower odds of anxiety and/or depression were found in participants with a university education (aOR 0.2, 0.5-0.9), and those living in the southeast (aOR 0.2, 0.1-0.3) or northeast (aOR 0.3, 0.2-0.4). Compared to people with impairments that were not depression and/or anxiety, people with depression and/or anxiety were less likely to receive a retirement pension (aOR 0.4, 0.2-0.8), and more likely to receive medication for depression/anxiety (aOR 4.1, 1.9-9.1), report a serious health problem (aOR 1.8, 1.3-2.5), and seek advice/treatment with a government health worker/health post (aOR 6.3, 1.0-39.2)

A population-based survey of visual impairment and its correlates in Mahabubnagar district, Telangana State, India.

PURPOSE: To estimate the prevalence and correlates of visual impairment in Mahabubnagar district, Telangana, India. METHODS: Fifty-one clusters of 80 people (all ages) were sampled with probability proportionate to size. Households within clusters were selected through the compact segment sampling. Visual acuity (VA) was measured with a tumbling "E" chart. An Ophthalmic Assistant or Vision Technician examined people with VA<6/12 in either eye. Other impairments (hearing, physical) were clinically assessed and self-reported functional difficulties measured using the Washington Group Extended Set. People with visual impairment and age-sex matched controls with normal vision were interviewed about poverty, employment and education. RESULTS: 4,125 people were enumerated and 3,574 screened (86.6%). The prevalence of visual impairment (VA<6/12) was 8.0% (95% CI = 6.9-9.4%) and blindness was 0.4% (0.2-0.9%), and both increased rapidly with age. Uncorrected refractive error was the leading cause of visual impairment, and cataract the leading cause of blindness. Cataract surgical coverage (proportion of all cataracts that had received surgery) was relatively low (41% of people at VA<6/60), while the post-surgery outcomes were good (81% of operated eyes had presenting VA≥6/18). Among the 287 people with visual impairment, 15% had a moderate/severe physical impairment or epilepsy and 25% had a moderate/severe hearing impairment. Self-reported difficulties in vision were relatively closely related to visual acuity. People with visual impairment were more likely to be in the poorest quartile (OR = 1.9, 95% CI = 1.0-3.4) or unemployed (5.0, 2.2-10.0), compared to controls. CONCLUSIONS: Visual impairment was common in Mahabubnagar district, was mostly avoidable, and was correlated with poverty markers

Multidimensional poverty and disability: A case control study in India, Cameroon, and Guatemala.

Although the association between disability and multidimensional poverty has been consistently found in several studies in Low- and Middle-Income Countries. None of these studies so far has used an extended and internationally comparable questionnaire (extended Washington Group Questionnaire) and a clinical screening of disability. The purpose of this article is to calculate, compare and analyse the levels of multidimensional poverty of people with and without disabilities in Guatemala (national), in one district of Cameroon (Fundong Health District, North West Cameroon) and in one district in India (Mahbubnagar District, Telangana State). We used a case-control study approach; adults with disabilities identified in a population-based disability survey using the Washington Group Extended Questionnaire were matched to age-sex matched controls without disabilities and interviewed about their levels of access and use of different social services. Following the Alkire-Foster method, the levels of multidimensional poverty between cases and control were computed and compared. Additionally, we analysed how disability and other individual characteristics are associated with being poor in each country. The results showed that people with disabilities in all three-study settings face significantly higher levels of poverty and the intensity of their poverty is higher. In the case of Cameroon, differences in the levels of deprivation between people with and without disabilities were smaller than those observed in India and Guatemala. This might suggest that in countries with higher levels of human, economic and social development people with disabilities are being left behind by public policies aiming to reduce poverty and deprivation in basic indicators. In addition, indicators related to health contributed the most to the levels of multidimensional poverty for people with disabilities. These findings provide important evidence about the association of multidimensional poverty and disability and underline the importance of including indicators capturing individual deprivations to analyse poverty for this group

Prevalence and causes of hearing impairment in Fundong Health District, North-West Cameroon.

OBJECTIVE: To estimate the prevalence and causes of hearing impairment in Fundong Health District, North-West Cameroon. METHODS: We selected 51 clusters of 80 people (all ages) through probability proportionate to size sampling. Initial hearing screening was undertaken through an otoacoustic emission (OAE) test. Participants aged 4+ years who failed this test in both ears or for whom an OAE reading could not be taken underwent a manual pure-tone audiometry (PTA) screening. Cases of hearing impairment were defined as those with pure-tone average ≥41 dBHL in adults and ≥35 dBHL in children in the better ear, or children under age 4 who failed the OAE test in both ears. Each case with hearing loss was examined by an ear, nose and throat nurse who indicated the main likely cause. RESULTS: We examined 3567 (86.9%) of 4104 eligible people. The overall prevalence of hearing impairment was 3.6% (95% confidence interval [CI]: 2.8-4.6). The prevalence was low in people aged 0-17 (1.1%, 0.7-1.8%) and 18-49 (1.1%, 0.5-2.6%) and then rose sharply in people aged 50+ (14.8%, 11.7-19.1%). Among cases, the majority were classified as moderate (76%), followed by severe (15%) and profound (9%). More than one-third of cases of hearing impairment were classified as unknown (37%) or conductive (37%) causes, while sensorineural causes were less common (26%). CONCLUSIONS: Prevalence of hearing impairment in North-West Cameroon is in line with the WHO estimate for sub-Saharan Africa. The majority of cases with known causes are treatable, with impacted wax playing a major role

A Systematic Review of the Proportion of Blindness in the Population 50 Years and Older from Total Population-Based Surveys of Blindness and Visual Impairment.

PURPOSE: Epidemiological data is essential for planning; however, all-age population-based surveys are resource intensive. Rapid Assessment of Cataract Surgical Services methodology was developed in India in 1995 and subsequently promoted by the World Health Organisation for use worldwide. The commonly used Rapid Assessment of Avoidable Blindness (RAAB) evolved from this in 2005, constraining surveys to populations aged 50 or more based on the report 'The Epidemiology of Blindness in Nepal' (SEVA, 1988), where 78.7% of blindness occurred in people aged 50+. The purpose of this study is to examine whether more recent total-population-based surveys continue to find a similar proportion of blindness in the population aged 50+. METHODS: A systematic literature review identified all population-based surveys of blindness published 1996-2017. Data extraction was undertaken by two independent researchers and compared. RESULTS: The proportions of blindness (presenting visual acuity (PVA) <3/60) and moderate/severe visual impairment (MSVI) (PVA <6/18-3/60) from total population-based surveys in people aged 50+ ranged from 90% (Mali, 1996) to 45.8% (South Korea, 2015); the mean proportions across all surveys were 73.1% (95% CI, 60.4-85.8%) for blindness, and 73.8% (95% CI, 54.8-92.8) for MSVI. No trend over time or association with GDP was identified. CONCLUSION: This systematic literature review supports the rationale for constraining surveys to the population aged 50+ as this will greatly reduce sample size but still include a high proportion of total cases of blindness; paucity of total population-based surveys highlights the ongoing need for RAAB in service planning internationally

Livelihood opportunities amongst adults with and without disabilities in Cameroon and India: A case control study.

Proven links between disability and poverty suggest that development programmes and policies that are not disability-inclusive will leave persons with disabilities behind. Despite this, there is limited quantitative evidence on livelihood opportunities amongst adults with disabilities in Low and Middle Income Countries. This study adds to the limited evidence base, contributing data from one African and one Asian Setting. We undertook a population-based case-control study of adults (18+) with and without disabilities in North-West Cameroon and in Telangana State, India. We found that adults with disabilities were five times less likely to be working compared to age-sex matched controls in both settings. Amongst adults with disabilities, current age, marital status and disability type were key predictors of working. Inclusive programmes are therefore needed to provide adequate opportunities to participate in livelihood prospects for adults with disabilities in Cameroon and India, on an equal basis as others. These findings are of crucial importance at this stage of the Sustainable Development Agenda, to ensure that the mandate of inclusive development is achieved