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a rapid assessment of avoidable blindness in southern zambia在赞比亚南部可避免盲症的快速评估
A Rapid Assessment of Avoidable Blindness in
Southern Zambia
1 2 2 3 4
Robert Lindfield *, Ulla Griffiths , Fiammetta Bozzani , Musonda Mumba , Joseph Munsanje
1 International Centre for Eye Health, London School of Hygiene and Tropical Medicine (LSHTM), London, United Kingdom, 2 Department of Global Health and
Development, London School of Hygiene and Tropical Medicine (LSHTM), London, United Kingdom, 3 Lusaka Eye Hospital, Lusaka, Zambia, 4 S S Development
Consultants, Lusaka, Zambia
Abstract
Introduction: A rapid assessment of avoidable blindness (RAAB) was conducted in Southern Zambia to establish the
prevalence and causes of blindness in order to plan effective services and advocate for support for eye care to achieve the
goals of VISION 2020: the right to sight.
Methods: Cluster randomisation was used to select villages in the survey area. These were further subdivided into
segments. One segment was selected randomly and a survey team moved from house to house examining everyone over
the age of 50 years. Each individual received a visual acuity assessment and simple ocular examination. Data was recorded
on a standard proforma and entered into an established software programme for analysis.
Results: 2.29% of people over the age of 50 were found to be blind (VA ,3/60 in the better eye with available correction).
The major cause of blindness was cataract (47.2%) with posterior segment disease being the next main cause (18.8%). 113
eyes had received cataract surgery with 30.1% having a poor outcome (VA ,6/60) following surgery. Cataract surgical
coverage showed that men (72%) received more surgery than women (65%).
Discussion: The
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