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See Clear Naturally
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Laser Eye Surgery - Everything you need to know
Author: Izzy Brewer
What is Lasik
The eye and vision errors
The cornea is a part of the eye that helps focus light to create an image on the retina. It works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction. Usually the shape of the cornea and the eye are not perfect and the image on the retina is out-of-focus (blurred) or distorted. These imperfections in the focusing power of the eye are called refractive errors. There are three primary types of refractive errors: myopia, hyperopia and astigmatism. Persons with myopia, or nearsightedness, have more difficulty seeing distant objects as clearly as near objects. Persons with hyperopia, or farsightedness, have more difficulty seeing near objects as clearly as distant objects. Astigmatism is a distortion of the image on the retina caused by irregularities in the cornea or lens of the eye. Combinations of myopia and astigmatism or hyperopia and astigmatism are common. Glasses or contact lenses are designed to compensate for the eye's imperfections. Surgical procedures aimed at improving the focusing power of the eye are called refractive surgery. In LASIK surgery, precise and controlled removal of corneal tissue by a special laser reshapes the cornea changing its focusing power. More about this and everything else to do with Laser Eye Surgery can be found at http://www.freewebs.com/lasik. This site contains all the info you will ever need on the subject.
Other types of refractive surgery
Radial Keratotomy or RK and Photorefractive Keratectomy or PRK are other refractive surgeries used to reshape the cornea. In RK, a very sharp knife is used to cut slits in the cornea changing its shape. PRK was the first surgical procedure developed to reshape the cornea, by sculpting, using a laser. Later, LASIK was developed. The same type of laser is used for LASIK and PRK. Often the exact same laser is used for the two types of surgery. The major difference between the two surgeries is the way that the stroma, the middle layer of the cornea, is exposed before it is vaporized with the laser. In PRK, the top layer of the cornea, called the epithelium, is scraped away to expose the stromal layer underneath. In LASIK, a flap is cut in the stromal layer and the flap is folded back.
Another type of refractive surgery is thermokeratoplasty in which heat is used to reshape the cornea. The source of the heat can be a laser, but it is a different kind of laser than is used for LASIK and PRK. Other refractive devices include corneal ring segments that are inserted into the stroma and special contact lenses that temporarily reshape the cornea (orthokeratology).
What the FDA regulates
In the United States, the Food and Drug Administration (FDA) regulates the sale of medical devices such as the lasers used for LASIK. Before a medical device can be legally sold in the U.S., the person or company that wants to sell the device must seek approval from the FDA. To gain approval, they must present evidence that the device is reasonably safe and effective for a particular use, the "indication." Once the FDA has approved a medical device, a doctor may decide to use that device for other indications if the doctor feels it is in the best interest of a patient. The use of an approved device for other than its FDA-approved indication is called "off-label use." The FDA does not regulate off-label use or the practice of medicine.
The FDA does not have the authority to:
Regulate a doctor's practice. In other words, FDA does not tell doctors what to do when running their business or what they can or cannot tell their patients.
Set the amount a doctor can charge for LASIK eye surgery.
"Insist" the patient information booklet from the laser manufacturer be provided to the potential patient.
Make recommendations for individual doctors, clinics, or eye centers. FDA does not maintain nor have access to any such list of doctors performing LASIK eye surgery.
Conduct or provide a rating system on any medical device it regulates.
The first refractive laser systems approved by FDA were excimer lasers for use in PRK to treat myopia and later to treat astigmatism. However, doctors began using these lasers for LASIK (not just PRK), and to treat other refractive errors (not just myopia). Over the last several years, LASIK has become the main surgery doctors use to treat myopia in the United States. More recently, some laser manufacturers have gained FDA approval for laser systems for LASIK to treat myopia, hyperopia and astigmatism and for PRK to treat hyperopia and astigmatism.
To find out everything you need to know about Laser Eye Surgery visit http://www.freewebs.com/lasik
About the Author
Laser Eye Surgery - Everything you ever need to know, visit http://www.freewebs.com/lasik ---
http://www.cashloopholes.co.uk
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A Quick Note
From The Publisher...
If you like the article above, you may be
interested in the following article which is also related to Lasik...
| Contact Lenses or Lasik Surgery Which is the right choice for you |
| Contact lenses can get expensive, not to mention the factthat you get tired of having to put them into and out ofyour eyes every single day. With the advent of lasersurgery in the last decade, more and more people arediscovering that they can have 20/20 vision (or better)without ever having to wear glasses again.
Laser surgery is expensive and it's not generally coveredby insurance because it's considered an elective procedure.Some insurance companies will cover a very small portion,leaving a general cost somewhere between $3000 and $4000dollars. So immediately, it's a cash investment ofsignificant portion.
Many clinics do offer financial payment plans, but they areusually one or two year plans that allow you to spread outthe payments. This option can still cost you about$180 to$400 per billing period, whether it is by the month orquarter.
If the cost isn't something to turns the option off to youimmediately, it's good to weigh the facts. Everyone is acandidate... |
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Lasik, Lasik Eye Surgery News |
Icon LASIK Announces Sunglass Trunk Shows at Its Cherry Creek Eye Care Center DENVER, CO-- - ICON LASIK announces several eye wear and sunglasses Trunk Shows in Denver during early 2012. The Trunk Shows feature major sunglass designers including Fendi sunglasses, Roberto Cavalli ... Free LASIK for Your Valentine, a Gift from Khanna Vision Institute If one does LASIK eye procedure with Dr. Khanna either in Beverly Hills or Westlake Village, their valentine will get a gift card for free LASIK of equal value, which can be used anytime, or can be donated to charity.Beverly Hills, California (PRWEB) February 08, 2012 Valentine's Day is a very important day to express love and appreciation for one’s beloved. Vision is equally important. ... Avedro Announces Canadian Approval for Lasik Xtra™ Avedro, Inc. announced today that the Company’s proprietary Lasik Xtra procedure has received Canadian Approval. Lasik Xtra is a two minute procedure used in conjunction with standard Lasik to restore biomechanical integrity and strength to the cornea after a standard Lasik procedure. Lasik surgery improves vision for almost everyone DEAR DOCTOR K: I’ve worn glasses and contact lenses for years. I just scheduled LASIK surgery. What will happen during this procedure? |
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