5,500,000 people have a cataract interfering with their vision in the US (Research to Prevent Blindness, NISE, NSF) ... see also overview of Cataracts.
approx 1 in 49 or 2.02% or 5.5 million people in USA [Source statistic for calcuation: "5,500,000 people have a cataract interfering with their vision in the US (Research to Prevent Blindness, NISE, NSF)" -- see also general information about data sources]
400,000 new cases of cataract occur each year in the US (Research to Prevent Blindness, NISE, NSF) ... see also overview of Cataracts.
approx 1 in 679 or 0.15% or 400,000 people in USA [Source statistic for calcuation: "400,000 new cases of cataract occur each year in the US (Research to Prevent Blindness, NISE, NSF)" -- see also general information about data sources]
400,000 per year, 33,333 per month, 7,692 per week, 1,095 per day, 45 per hour, 0 per minute, 0 per second. [Source statistic for calculation: "400,000 new cases of cataract occur each year in the US (Research to Prevent Blindness, NISE, NSF)" -- see also general information about data sources]
The following statistics relate to the prevalence of Cataracts:
The following statistics relate to the incidence of Cataracts:
Statistics about types of Cataracts:
16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Cataracts.
Cataracts have various causes:
❑ Senile cataracts develop in elderly patients, probably because of degenerative changes in the chemical state of lens proteins.
❑ Congenital cataracts occur in neonates as genetic defects or as a sequela of maternal rubella during the first trimester. They acquire them through autosomal dominant inheritance, which will occur even if only one parent passes it along. Fifty percent of children in such families are affected.
❑ Traumatic cataracts develop after a foreign body injures the lens with sufficient force to allow aqueous or vitreous humor to enter the lens capsule. Trauma may also dislocate the lens.
❑ Complicated cataracts develop as secondary effects in patients with uveitis, glaucoma, or retinitis pigmentosa, or in the course of a systemic disease, such as diabetes, hypoparathyroidism, or atopic dermatitis. They can also result from exposure to ionizing radiation or infrared rays.
❑ Toxic cataracts result from drug or chemical toxicity with prednisone, ergot alkaloids, dinitrophenol, naphthalene, phenothiazines, or pilocarpine or from extended exposure to ultraviolet rays.
Cataracts occur as part of the aging process and are most prevalent in people older than age 70.
Source: Professional Guide to Diseases (Eighth Edition), 2005
Estimated to cause between 10% and 40% of all blindness in children worldwide
The prevalence of infantile cataracts has been reported to be as high as 6 to as low as 1.2 cases per 10,000 births.
Source: The 5-Minute Pediatric Consult, 2008
The term 'prevalence' of Cataracts usually refers to the estimated population of people who are managing Cataracts at any given time. The term 'incidence' of Cataracts refers to the annual diagnosis rate, or the number of new cases of Cataracts 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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