Prevention of blindness and visual impairment (VI) receives a high priority in public health programs. To achieve the goals of VISION 2020, regular population-based surveys are crucial to provide an updated assessment of the visual problems, establish local eye care programs, and initiate future eye care planning. The Rapid Assessment of Avoidable Blindness (RAAB) survey is a fast, simple, and inexpensive standardized methodology to assess the prevalence and causes of blindness in people aged ≥50 years in a specific geographic area.
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