This guide presents basic principles pertinent to the design, conduct and interpretation of blindness prevalence surveys, the results of which can be used in designing blindness prevention programmes. A nationwide rapid assessment of avoidable blindness survey was undertaken in the maldives among people aged 50 years or more to assess the prevalence and causes of blindness and visual. We have conducted raab studies to estimate the prevalence and causes of blindness in people aged. Seventysix clusters of 50 people 50 years or older were selected by probability proportionate to size sampling of. Implementation of the action plan for the prevention of avoidable blindness and visual impairment. Rapid assessment of avoidable blindnesspast, present, and. Based on the findings from 1992, the prevalence of blindness was estimated at 2. The rapid assessment of avoidable blindness raab methodology was used with mobile data collection using the mraab smartphone app. Background rapid assessment of avoidable blindness provides valid estimates in a short period of time to assess the magnitude and causes of avoidable blindness. Elimination of avoidable blindness world health organization. Rapid assessment of avoidable blindness for health service. Cambodia rapid assessment for avoidable blindness 2007 ghdx. Results of rapid assessment of avoidable blindness summary report. First rapid assessment of avoidable blindness survey in.
A comparative assessment of avoidable blindness and visual impairment in seven latin american countries. Seventysix clusters of 50 people 50 years or older were selected by probability proportionate to size sampling of clusters. The elbraille solution is a portable device to keep users connected at. Learn about causes, diagnosis, treatment, and more. Scan this qr code with your smart phone or mobile device to read online. Background rapid assessment of avoidable blindness provides valid estimates in a short period of time to assess the magnitude and causes of. The rapid assessment of avoidable blindness, or raab, is a relatively simple.
Further, most of these benefits are likely to accrue directly to women and among the poor. Rapid assessment of avoidable blindness and diabetic retinopathy. The first rapid assessment of avoidable blindness raab in. Methods a crosssectional study of a population in thailand age 50 years old or over aimed to assess the prevalence and causes of blindness and visual impairments. A rapid assessment of avoidable blindness raab was conducted in manicaland province, zimbabwe from march to april 2016. Our line of hardware devices for the blind includes the focus blue family of refreshable braille displays, which offers unsurpassed braille quality and comfortable, efficient keyboard and controls, permitting rapid braille input on pc, or mobile devices.
The prevalence estimates considered the design effect. Since 1992, there was no studies were done on the prevalence of avoidable blindness in mongolia. Data were entered into and analysed using raab software. Cataract and refractive error were the primary causes of severe visual impairment 73. It is a population based survey of visual impairment and eye care. The raab study methodology elicits information on the magnitude and causes of blindness and vision impairment via reduced vision screening and ocular health screening of adults. A comparative assessment of avoidable blindness and visual. The raab software package and stata 9 software were used to enter and analyse data. The fiftyninth world health assembly, in resolution wha59. Generating evidence for planning eye care service delivery in an. Prevention of avoidable blindness and visual impairment. Training of trainers in rapid assessment of avoidable. The rapid assessment of avoidable blindness raab has been developed as a simple and rapid survey methodology that can provide data on the prevalence and causes of blindness.
Rapid assessment of avoidable blindness in bangladesh taylor. Introduction globally, more than 82 % of all blindness occurs in people. Rapid assessment of avoidable blindness europe pmc article. The rapid assessment of avoidable blindness raab has been developed as a simple and rapid survey methodology that can provide. This population based survey was organised by the ministry of health and child care, in collaboration with cbm, zimbabwe council for the blind and the community eye health institute, university of cape town. The rapid assessment of avoidable blindness raab is a rapid survey methodology developed at iceh, and used to complete over 300 surveys of visual impairment and blindness to date. Findings from racss and raab are essential as baseline data for planning of intervention programmes to eliminate avoidable blindness, and to measure achievements over time of ongoing intervention programmes. Data analysis was done using the standard raab software. The rapid assessment of avoidable blindness raab was a cbm international project, conducted with ms eye care partner in takeo province, cambodia. Who rapid assessment of avoidable blindness for health.
We would like to thank the management and staff of caritas takeo eye hospital for helping. The standardised protocol for rapid assessment of avoidable blindness raab was used to identify people with visual impairment vi and ophthalmic examination was used to determine the main cause of vi. The cambodia rapid assessment for avoidable blindness 2007 collected data through household interviews and visual examinations. Rapid assessment of avoidable blindness in india plos. Rapid assessment of avoidable blindness raab semantic scholar. Eye care ophthalmology needs an accessible, affordable and. The aim of this article is to reflect on the achievements and challenges of raab. Methods of assessment of avoidable blindness world health organization. A completely blind individual is unable to see at all. Prevalence of blindness and cataract surgical coverage in. The rate of worldwide blindness at the beginning of the 21st century will double by the year 2020 if provision of eye care services is not improved. Rapid assessment of avoidable blindness in kunming, china. Citeseerx document details isaac councill, lee giles, pradeep teregowda.
The number of people needed for the survey is calculated using an automated programme within the raab software package. Rapid assessment of avoidable blindness raab survey analysis. Rapid assessment of avoidable blindness raab is a rapid, populationbased survey methodology on blindness, visual impairment and eye care services among people aged 50 years and over. Rapid assessment of avoidable blindness provides valid estimates in a short period of time to assess the magnitude and causes of avoidable blindness. Programme planners are often reluctant to plan surveys, as they are believed to be expensive, timeconsuming, and complicated. The rapid assessment of avoidable blindness raab has been developed as a simple.
Brien holden vision institute and school of optometry and vision science, university of new south wales, sydney, australia. Rapid assessment of avoidable blindness raab is a simple and rapid survey methodology that can provide data on the prevalence and causes of avoidable blindness. The specific raab software package developed for the survey. Methods and findings sixteen randomly selected districts where blindness surveys were undertaken 7 to 10 years earlier were. Subjects with visionimpairing cataract were questioned on barriers keeping them from pursuing cataract surgery, and subjects that had undergone cataract surgery were asked about their operations. Blindness is strictly defined as the state of being totally sightless in both eyes. It provides powerful evidence that, by unlocking human potential, money spent on eliminating avoidable blindness is a wise investment. First national blindness survey, 1981 in nepal had shown prevalence of bilateral blindness as 0. Rapid assessment of avoidable blindness in rwanda 2015. This is the first rapid assessment of avoidable blindness raab study in thailand. So far, raab has been successfully undertaken in kenya, 1 bangladesh, 2 the philippines, botswana, rwanda, mexico, and china personal communication. Third, it has an openaccess data entry and analysis software that provides robust, autogenerated analysis reports of key eye health indicators disaggregated by. Raab, either a repeat or a first time survey, was completed in 8 countries in this decade 2010 onwards.
Description of the assessment the rapid assessment is a standardized populationbased survey method to assess the prevalence and causes of visual. The word blindness, however, is commonly used as a relative term to signify visual impairment, or low vision, meaning that even with eyeglasses, contact lenses, medicine or surgery, a person does not see well vision impairment can range from mild to sev. This amounts to 30% of global blindness and 32% of global visual impairment. Blindness is the inability to see things, even light. Rapid assessment of avoidable blindness raab is a rapid survey methodology developed at iceh. A rapid assessment of avoidable blindness planning module is currently being developed based on the outcomes of this study. Raab can provide the prevalence of blindness and visual impairment, its main causes, the output and quality of eye care services. A training of trainers in rapid assessment of avoidable blindness was held at the regional office of the western pacific in manila, philippines from 10 to 15 march 2014. Rapid assessment of avoidable blindness in the northern. Rapid assessment of avoidable blindness raab is a rapid survey methodology. We conducted a rapid assessment of avoidable blindness raab in 8 districts of bangladesh january 2010 december 2012 to establish the prevalence and causes of blindness. Pdf first rapid assessment of avoidable blindness survey. The rapid assessment of avoidable blindness raab is a rapid survey.
Ocular examinations were performed in those with va rapid assessment of avoidable blindness. The module is focused at the district planning level and will complement existing tools such as whos eye care service assessment tool, which is used at the national level. The first rapid assessment of avoidable blindness raab. Rapid assessment of avoidable blindness in the northern ethekwini district of kwazulunatal province, south africa read online. The rapid assessment of avoidable blindness, or raab, is a relatively simple and lowcost survey methodology to provide data on the prevalence and causes of visual loss. Purpose to obtain new rapid assessment of avoidable blindness raab data on the prevalence, causes and trends of blindness, visual impairment and cataract surgery. A rapid assessment of avoidable blindness in southern zambia. This software allows data entry, sample size calculation, and standardized data analysis. We are the only organization in bangladesh with experience of conducting raab studies. The training was cofunded by the fred hollows foundation and was attended by thirteen rapid assessment of avoidable. So far, raab has been successfully undertaken in kenya,1 bangladesh,2 the philippines, botswana, rwanda, mexico, and china personal communication. This study examines the impact on blind avoidable and treatable eye conditions in this region after significant increase in eye care services in the past decade. Rapid assessment and avoidable blindness raab in myanmar. It is a population based survey of blindness and visual impairment and eye care services among people aged 50 years and over.
The centre for eye research australia cera was commissioned through cbm international to conduct the raab. The assembly has before it a report document a659 on the progress made in implementing the action plan for the prevention of avoidable blindness and visual impairment since the endorsement of the action plan in resolution wha62. Prevalence of blindness, visual impairment and diabetes in nuevo leon, mexico 2014. Prevention of avoidable blindness and visual impairment report by the secretariat 1. Search for library items search for lists search for contacts search for a library.
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