NavGeneral InfoEmail Print Geography United Republic of Tanzania (TZA) Pemba North, Pemba South, Zanzibar Central/South, Zanzibar North, Zanzibar Urban/West Coverage type Subnational Time period covered 01/2007 - 12/2007 Series or system Rapid Assessment of Avoidable Blindness (RAAB) Data type Survey Summary Rapid assessment of avoidable blindness (RAAB) is a rapid survey methodology developed at ICEH. It is a population based survey of visual impairment and eye care services among people aged 50 years and over. RAAB can provide the prevalence of blindness and visual impairment, its main causes, the output and quality of eye care services, barriers, cataract surgical coverage and other indicators of eye care services in a specific geographical area. Keywords Vision loss, Visual acuity Citation Contributors International Centre for Eye Health (ICEH) Suggested citation International Centre for Eye Health (ICEH). Tanzania - Zanzibar Rapid Assessment of Avoidable Blindness 2007. GHDx Entry last modified on: Jan 18, 2023