Cataract remains the leading cause of blindness and an important cause of visual impairment across the globe.
Cataract blindness statistics.
The main non modifiable risk factor for cataract is aging.
Visual impairment in 2010 is a major global health issue.
Cataract remains the leading cause of blindness.
Learn about the types symptoms and causes of cataracts and how your doctor will diagnose and treat them.
The prevalence of blinding bilateral cataract in africa is estimated to be around 0 5.
People 50 years and older are 82 of all blind.
In 2012 nei partnered with prevent blindness america to apply these prevalence rates to the 2010 u s.
But when people hear the word blindness many assume that severe vision loss is permanent and cannot be cured.
More than half of all americans age 80 and older either have had cataracts or have had surgery to get rid of cataracts.
Explore eye health statistics our data and statistics are free for researchers policymakers and members of the media to use and distribute.
Cataracts that affect the edges of the lens cortical cataracts.
Yes if left untreated cataracts cause continual loss of vision eventually leading to legal blindness or even total blindness.
Age related macular degeneration is believed to cause of blindness in 46 6 percent of non hispanic whites 4 2 percent of african americans and 23 7 percent of hispanics who are legally blind.
Although cataracts can be surgically removed in many countries barriers exist that prevent patients to access surgery.
Cataracts cause legal blindness in 10 3 percent of non hispanic whites 25 percent of african americans and 7 9 percent of hispanics who are legally blind.
As demonstrated by these surveys approximately half the blindness in africa is due to cataract.
A cortical cataract begins as whitish wedge shaped opacities or streaks on the outer edge of the lens cortex.
As it slowly progresses the streaks extend to the center and interfere with light passing through the center of the lens.
According to the latest assessment cataract is responsible for 51 of world blindness which represents about 20 million people 2010.
The major causes of visual impairment are uncorrected refractive errors 43 and cataract 33.
In the case of blindness caused by cataracts vision usually can be successfully restored with cataract surgery and implantation of an intraocular lens.
Cataracts affect more than 24 4 million americans age 40 and older.
However this figure is obviously dependent on the regional rate of cataract surgery.
Other frequently associated risk factors are trauma uveitis diabetes ultraviolet light exposure and smoking.
How many people in the united states have cataracts.
The preventable causes are as high as 80 of the total global burden.
