World Health Organization's Fact Sheet on Blindness and Vision ImpairmentThe WHO has created a useful fact sheet on blindness and visual impairment. It includes interesting facts, definitions of visual impairment, prevalence, causes, impact, and more.
Here are a few useful facts:
- 2.2 billion people are visually impaired
- Most of these people are over 50 years old
- The economic impact of visual impairment is about $244 billion
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