How Prk Can Literally Help You See the Light
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Prior to LASIK’s popularity, the FDA approved the laser eye surgery procedure called PRK (photorefractive keratectomy) in 1995. Before this, PRK was practiced in many other countries. In fact, Americans were going to Canada for the procedure before it was available in this country.
Even though ernal nofollow” target=”_blank” href=”http://www.lasikworld.com%2Flasik.html&_gwt_noimg=1&gsessionid=hgqh3Coz9DSt78ZNyVA6Tg”>LASIK is the most common refractive surgery performed these days, some people are not good candidates for the procedure. This may be due to a cornea that is too thin or too steep. Both procedures work on those with nearsighted or farsighted vision, as well as astigmatism. However, in a LASIK procedure, a flap is created in the cornea to get to the stromal layer.
If your cornea is too thin, there may not be enough tissue to form a flap safely and interfere with the reshaping done using an excimer laser. An excimer laser is a cool laser, so it doesn’t heat up the air or surfaces around the laser. A focused beam of ultraviolet light is emitted from the laser, which breaks down the organic cells in the cornea.
If your cornea is too steep, the mechanical instrument, called a microkeratome, may not be able to follow the contours of the cornea.
PRK Alternative
PRK surgery does not require the creation of a flap. The excimer laser still reshapes the cornea, but this is done after some of the surface cells, called the epithelium, are completely removed by using a diluted alcohol solution. Don’t worry, the cells grow back.
During the PRK procedure, your eyes are anesthetized with numbing eye drops so there is no pain. They are kept open using a “suction ring” that keeps them pressurized and immobile. The ophthalmologist works on one eye at a time, carefully shaping the cornea to the required prescription. Throughout the procedure, the laser will emit a clicking sound, and you may smell an odor. This is all perfectly normal.
The PRK surgery can take as little as one minute, though this may be longer for people with very high prescriptions. After the surgery, you will rest for a little while, but then may go home. However, you will need someone to drive you.
After PRK Surgery
Your doctor will give you instructions that you need to follow to avoid any complications that might arise. Taking a couple of days off from your regular activity is required to let your eyes rest and let the epithelium begin to heal.
A difference between LASIK and PRK is the time it takes to heal. With LASIK the healing process may have less discomfort and take a shorter time. PRK’s discomfort is mild, usually itching or minor pain, but it may take days or weeks for the eyes to completely heal. During this time, you will be given eye drops, protective contact lenses, or pain medication to keep this to a minimum.
While complications are rare, they can include eye infections, as well as night glare where halos or starbursts may be noticeable around lights. If you suspect you may have one of these problems, let your eye doctor know as soon as possible.
Watch the video related to prk laser
Demonstrative video of Advanced PRK – No Touch Tecnique. 100% Laser. In this particular technique there is no need for mechanical device or to cut the corneal flap. Is that the Z-Lasik Tecnique? Is safer the PRK No-Touch or the Blade-less Lasik? I`ll wait come comments About Author
If you live in the Sacramento, Roseville, Stockton, or Yuba City, California area, and have been told that you are not a good candidate for LASIK, please contact Griffin & Reed Eyecare to discuss how PRK might be an option for you.
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