Prevalence and Incidence of Blindness


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About prevalence and incidence statistics: The term 'prevalence' of Blindness usually refers to the estimated population of people who are managing Blindness at any given time. The term 'incidence' of Blindness refers to the annual diagnosis rate, or the number of new cases of Blindness diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Prevalance of Blindness: 1,100,000 people are legally blind in the US (Research to Prevent Blindness, NISE, NSF)
Prevalance Rate: approx 1 in 247 or 0.40% or 1.1 million people in USA [about data]
Worldwide prevalence of Blindness:42,000,000 people are blind worldwide (Research to Prevent Blindness, NISE, NSF)

Prevelance statistics about Blindness: The following statistics relate to the prevalence of Blindness:

  • More than 1 million Americans are blind
  • 80,000 people suffer from potentially blinding eye diseases in the US (Research to Prevent Blindness, NISE, NSF)

Incidence statistics about Blindness: The following statistics relate to the incidence of Blindness:

  • 12,000-24,000 new cases of blindness annually are due to diabetic retinopathy in the US (National Diabetes Statistics fact sheet, NIDDK, 2003)
  • 80,000 people suffer from potentially blinding eye diseases in the US (Research to Prevent Blindness, NISE, NSF)

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