Prevalence and Incidence of Astigmatism

Prevalance of Astigmatism:

45 million Americans (dubious estimate based on "two thirds of people with myopia also have astigmatism") ... see also overview of Astigmatism.

Prevalance Rate:

approx 1 in 6 or 16.54% or 45 million people in USA [Source statistic for calcuation: "45 million Americans (dubious estimate based on "two thirds of people with myopia also have astigmatism")" -- see also general information about data sources]

Astigmatism Prevalence: Book Excerpts

• Refractive Error - epidemiology - Refractive Error

Prevelance statistics for Astigmatism:

The following statistics relate to the prevalence of Astigmatism:

• 4.6% of population self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• 3.9% of male population self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• 366,000 men self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• 5.3% of female population self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• 512,000 women self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• 878,000 people self-reported having astigmatism in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• more statistics...»

Prevalence/Incidence of Astigmatism: Online Medical Books

16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Astigmatism.

Refractive Error: Refractive Error - epidemiology
(The 5-Minute Pediatric Consult)

Because of the age-related growth of the optic components of the eye, prevalence of refractive errors varies during childhood. At birth, usual median refractive error is low hyperopia, approximately +2.00 diopters. In adults, the median is emmetropia. The incidence of refractive error requiring correction increases with age.

Refractive Error - prevalence

• In school-aged children in the US, 7–25% have refractive error significant enough to affect visual acuity. ~25% of the adult population of the US have myopia, and ~5% have hyperopia.
• Some ethnic groups have increased prevalence of myopia, including people of Native American, Chinese, and Japanese descent.

» READ BOOK EXCERPT ONLINE »

Source: The 5-Minute Pediatric Consult, 2008

About prevalence and incidence statistics:

The term 'prevalence' of Astigmatism usually refers to the estimated population of people who are managing Astigmatism at any given time. The term 'incidence' of Astigmatism refers to the annual diagnosis rate, or the number of new cases of Astigmatism 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.

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