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Cataracts: An often age-related condition that leads to gradual vision loss secondary to clouding of the lens. Examination may reveal opacification of the lens and often an absent or blunted red reflex. Dilated fundus exam allows for examination of more peripheral cataracts, as well as evaluating candidacy for cataract surgery. [9] [12]
In addition to the common complications of cataract surgery, clear lens extraction may also cause premature posterior vitreous detachment and retinal detachment, [2] particularly in patients with high Myopia. However, modern surgical techniques and advanced lens technology have significantly reduced the likelihood of this and other complications.
Researchers have recently developed a new drug that will ultimately shrink down and dissolve cataracts -- the leading cause of human blindness that affects tens of millions of people worldwide. ...
In contrast, in 2017, over 600,000 cataract surgeries were performed in over 16 countries [3] and over 98 percent were done with microsurgery and lens implants. Nepal is the only country in the Himalayan region performing more cataract surgery than the annual rate of new cataract blindness. [citation needed]
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.
Phacoemulsification is a cataract surgery method in which the internal lens of the eye which has developed a cataract is emulsified with the tip of an ultrasonic handpiece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt solution to maintain the volume of the anterior chamber during the procedure.
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Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. It causes a loss of ability to maintain focus ( accommodation ), high degree of farsightedness ( hyperopia ), [ 1 ] and a deep anterior chamber .