Laser Eye Surgery, PRK, LASIK
In this section you will find out what exactly PRK is, what's involved with the procedure and the results of PRK treatment in terms of safety and history.
|RK - The Beginning of Eye ReShaping|
|PRK - The Modern Choice
for Vision Restoration
|PRK - Predictability and Safety|
|NEW!! - www.lasik1.com
For detailed information with pictures (photos) of an actual LASIK procedure, please visit our sister web site www.lasik1.com
Throughout history, mankind has experimented with ways to improve vision with external aids and instruments. Although glasses and contact lenses have provided many people with a reasonable quality of life, they still have limitations. Glasses have improved through the use of modern lightweight lenses and grinding techniques - such as bifocals and reading glasses. And designers have improved the look of glasses to the point that now certain types of frames are a required fashion statement. But for many lifestyles, glasses are very inconvenient. And for some people they do not give the quality of vision desired.
The advent of contact lenses in the 50's addressed some of the inconveniences of glasses. The apparent invisibility of contacts was great for people who were self-conscious about wearing glasses. In some cases, people could engage in activities that were previously prohibitive with glasses - such as athletics, physically active careers, or just an intimate evening with a loved one. But wearing contact lenses also has a price. In addition to the purchase price (which have dropped dramatically in the past few years), the wearer now must spend what amounts to considerable time and money both in the maintenance and in the application of their contacts. There still remains a limitation as to the types of activities one can participate in, and lastly, long term lens wearers may develop an intolerance to wearing their lenses as well as long term damage.
As a result of the limitations of both of the above visual aids, ophthalmologists (eye doctors) were keen to come up with better ways to provide improved vision. The last frontier was to make modifications to the eye itself - to correct the actual aberration that was causing poor vision in the first place. And it is this practice that the next section is devoted to explaining.
Before the appearance of computers and laser beams, the main tools available to an ophthalmologist were a scalpel, a steady hand, a medical background and perhaps some engineering knowledge. The premise was that if they could modify the shape of the cornea, then possibly they could effect permanent improvement to their patient's vision. (The cornea is the clear dome on the front of the eye, it is in reality a lens which provides about 80% of the focus power of the eye.) The first procedure to show the possibility of achieving a positive result was called radial keratotomy or RK.
|Myopia, or nearsightedness is caused by your cornea being more domed than necessary - the light enters your eye and focuses at a point in front of your retina. (The retina is the part of your eye that receives visual information and sends it to your brain.)|
Dr. Murray McFadden Email: M2@prk.com
For detailed information with actual photos of the LASIK procedure, please visit our sister web site www.lasik1.com
(BSc, MD, FRCS(C), Diplomate of the American
Board of Ophthalmology)
© Copyright 1996-2005 Murray McFadden MD, Inc.
Telephone: (604) 530-3332
Fax: (604) 535-6258
Langley, BC Canada V2Y 1N4
Dr. Murray McFadden
This page last updated on September 29, 2004.
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