RAAB is a standardised survey methodology that is widely used in the global eye care sector to determine the magnitude of blindness and vision impairment for the purposes of planning and advocacy for eye care services. It focuses on vision impairment in the population 50 years and older as the higher prevalence in this age group allows for a smaller sample size than if the all-age population were surveyed. A smaller sample size, along with a simplified exam protocol, means the survey can be completed relatively quickly, and consequently with less expense, compared to a comprehensive survey. RAAB is a complete system and includes provision for training, data collection and analysis.

This work is licensed under CC BY-NC-SA 4.0.

Eyecare services