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ReLEx Small incision lenticule extraction (SMILE), second generation of ReLEx Femtosecond lenticule extraction (FLEx), is a form of laser based refractive eye surgery developed by Carl Zeiss Meditec used to correct myopia, and cure astigmatism.
Contoura Vision is the only technology where consistent success beyond 20/20 vision has been achieved in the majority of patients. More than 40% of the patients that were evaluated were able to read one line on the visual acuity chart more than a person with 20/20 vision, and 13.5% could read two additional lines.
LASIK or Lasik (/ ˈ l eɪ s ɪ k /; "laser-assisted in situ keratomileusis"), commonly referred to as laser eye surgery or laser vision correction, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism. [1]
A New York teen lost vision in his left eye moments after powering up a "defectively designed," Chinese-made laser pointer he purchased on Amazon, according to a lawsuit against the retail behemoth.
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With more recent developments in laser technology, this is less common after 6 months though symptoms can persist beyond a year in some cases. [ citation needed ] A dilute concentration of the chemotherapeutic agent, Mitomycin-C, can be applied briefly at the completion of surgery to reduce risk of hazing, although with increased risk of sicca .
At the time, it was the first laser to use a five-dimensional eye tracker, compensating for both linear and rotational eye movements during the procedure. Clinical studies indicate that patients treated with this laser achieve higher visual performance [ 23 ] [ 24 ] than with glasses or contact lenses, with some achieving 125% visual acuity.
The most common modern procedure, LASIK, is performed through lifting the front surface of the eye by forming a thin hinged flap under which the shape of the cornea is changed by using an excimer laser or other surgical device. A microkeratome is usually used to cut the flap, but a femtosecond laser can also be used to make the flap. [citation ...
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