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As the lens fogs up, vision blurs, and this clouding of the lens is called a cataract. With cataracts, “often we have more glare in certain conditions,” Trief says, like driving at night or ...
Cataract surgery is one of the most cost-effective health interventions, since its economic benefits considerably exceed the cost of treatment. [ 131 ] [ 132 ] The 1998 World Health Report estimated 19.34 million people were bilaterally blind due to age-related cataracts, and that cataracts were responsible for 43% of all cases of blindness.
Posterior capsular rupture, a tear in the posterior capsule of the natural lens, is the most-common complication during cataract surgery. [8] Posterior capsule rupture can cause lens fragments to be retained, corneal oedema, and cystoid macular oedema; it is also associated with increased risk of endophthalmitis and retinal detachment.
Access to cataract surgery is very variable by country and region. Even in developed countries availability may vary significantly between rural and more densely populated areas. Cataract surgery is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. [1]
In 1753, Samuel Sharp performed the first-recorded surgical removal of the entire lens and lens capsule: the lens was removed from the eye through a limbal incision. [1] In America, cataract couching may have been performed in 1611, [ 30 ] while cataract extraction was most likely performed by 1776. [ 31 ]
The intraocular lens did not find widespread acceptance in cataract surgery until the 1970s, when further developments in lens design and surgical techniques had come about. As of 2021, approximately four million cataract procedures take place annually in the U.S. and nearly 28 million worldwide, a large proportion in India.
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