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  2. LASIK - Wikipedia

    en.wikipedia.org/wiki/LASIK

    LASIK surgery is performed by an ophthalmologist who uses a femtosecond laser or a microkeratome to create a corneal flap to expose the corneal stroma and then an excimer laser to reshape the corneal stroma in order to improve visual acuity. [2] [3] LASIK is very similar to another surgical corrective procedure, photorefractive keratectomy (PRK ...

  3. Mode locking - Wikipedia

    en.wikipedia.org/wiki/Mode_locking

    Semiconductor absorbers tend to exhibit very fast response times (~100 fs), which is one of the factors that determines the final duration of the pulses in a passively mode-locked laser. In a colliding-pulse mode-locked laser the absorber steepens the leading edge, while the lasing medium steepens the trailing edge of the pulse.

  4. Refractive surgery - Wikipedia

    en.wikipedia.org/wiki/Refractive_surgery

    Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement.

  5. FDA Warns of Potential Side Effects Associated With LASIK Surgery

    www.aol.com/fda-warns-potential-side-effects...

    LASIK is a surgery that is used to correct refractive errors, such as far-sightedness, near-sightedness, and astigmatism, so that people can be less dependent on glasses and contact lenses to get ...

  6. Why gymnast Stephen Nedoroscik wears glasses: What to know ...

    www.aol.com/news/why-gymnast-stephen-nedoroscik...

    “From day one of competing with them, they had a little bit of magic to them.” He sometimes uses them for comfort and “superstitious reasons,” rather than improving his eyesight, according ...

  7. Effects of long-term contact lens wear on the cornea - Wikipedia

    en.wikipedia.org/wiki/Effects_of_long-term...

    Stromal thickness does not return to a normal level even after an entire month in which contact lens wear is halted. [3] The density of microcysts also remains as long as one month after contact lenses are removed, [2] and microcysts do not disappear completely until two to three months after contact lens wear is completely halted. [3]

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