Lasik is the new method of eye surgery that does not require the use of traditional surgical instruments, like knives, in the use of delicate eye surgery. Lasik employs the use of a laser light to adjust the curvature of the cornea. While the procedure is less than twenty years old, it has already undergone several transformations as new developments and technology constantly improve on the process.
Some people are familiar with the Lasik term but don't realize that there are several different Lasik methods now available for clients with a variety of vision correction needs. Epi-Lasik came after the original Lasik procedure and differs from the original only in that a fine 'blade' is used to cut a thin flap of the epithelium, the outer covering of the cornea. Epi-Lasik is favored for use in patients who suffer from myopia. In Epi-Lasik, as in the original Lasik, a special laser is used to sculpt corneal tissues. Lasik Wavefront is also commonly performed. Preferred candidates are those with optimal corneal thickness as well as near and far-sightedness and astigmatism. Wavefront uses three-dimensional measurements to ascertain how your eyes process images. Each person's eyes and eyesight are unique to themselves, so this is a very personalized, custom-type surgery. With this customized form of Lasik, each of your eyes is examined to test their ability to focus light rays. Such information is fed into a three dimensional map that is created, which in turn guides a laser to reshape the corneal surface so that vision irregularities can be corrected.
Wavefront is a great leap forward in laser guided light refractive surgery in that it serves not only to improve general vision, but also increases contrast sensitivity and fine detail eyesight. Other forms of Lasik are known as PRK and RK methods, though these are not as common as Lasik, Epi-Lasik and Lasik Wavefront. More people every year from around the world are opting to undergo one of these forms of Lasik vision correction surgery. While most people think that anything that takes less than fifteen minutes, without the use of scalpel, operating room and general anesthesia can't really be considered surgery, Lasik eye correction is surgery. Proper precautions and post procedure instructions must be followed to the letter in order to reap the benefits of this technology that allows nearly non-invasive surgery of the eye.
While many countries around the world offer medical insurance to cover the costs of these procedures, the United States, for the most part, does not. It is still considered to be an elective surgery. At a cost of generally $1,500 to $2,000 an eye, keep in mind the fact that this procedure is virtually painless, quick, and does not involve cutting into deep eye tissues and muscles. That alone is enough to convince most people to opt for this type of surgery over wearing glasses or contact lenses for the rest of their lives. The technology behind Lasik vision correction surgery is what makes the procedure so expensive, but it is that very technology that offers the most safety and the highest rate of success than any other procedure to date.
Lasik Vision Correction Surgery
Generally candidates fall relatively easily in one of three groups - good candidates, "less than ideal" candidates, and those who definitely should not consider a lasik procedure.
As with so much in life, extremes are contra-indications. Lasik vision correction is probably only a good idea for healthy people who have a low to moderate eye problem, and who find eyeglasses or contact lenses annoying or restrictive.
Good candidates
You need to be more than 18 years of age; lasik is not approved for anyone under that age, as young eyes change too much. You will have had a stable prescription for corrective lenses for at least two years - also to ensure that your eyes are not changing too much.
You must be affected by one or more of the three common conditions that lasik can treat - myopia (short-sightedness), hyperopia (long-sightedness) or astigmatism (blurred vision caused by a badly-shaped cornea), or a combination of these three.
You should not suffer from eye diseases, or indeed any other disease that might impact on the effectiveness of surgery, or on your ability to heal quickly.
Your cornea must be at least 500 microns thick, to allow enough depth for the surgeon to create the required corneal flap.
Your pupils must not dilate more than seven millimeters in the dark, or else you will be much more likely to suffer from night vision problems such as halos or glare after any lasik vision correction.
The "less than good" candidates
If you fall into this category be very cautious. Make sure you understand the risks; the "informed consent" your surgeon will ask for means exactly that - you have understood the risks and given permission for the surgery to go ahead.
If you have a history of "dry eyes", you may find that this condition will worsen after lasik vision correction.
If you ever had ocular herpes at least a year must have passed since the initial diagnosis, as lasik can cause a recurrence.
If you have an autoimmune disease such as diabetes, lupus, rheumatoid arthritis or Crohn's disease you may have problems healing after surgery.
Some medicines such as steroids or immunosuppressants can also cause slow healing.
Scarring on the cornea is a contra-indication, although it may not be an absolute negative.
While people with contact lenses do play contact sports, is it really a good idea to have lasik vision correction if box, wrestle, play karate or take part in other activities where a blow to the face can be a normal occurrence?
Non-candidates
Don't consider lasik if you are pregnant or nursing, or will be within six months. Any change in your hormone levels could also cause changes in the tissue in your eyes.
Past eye surgery may also be an absolute disqualifier, although modern techniques can sometimes be used to offset the results of earlier, less-sophisticated refractive procedures.
Lasik is out if you have cataracts, suffer from advanced glaucoma, your cornea is too thin or you suffer from a disorder that thins your cornea, or your eye problems are too severe for lasik vision correction to be considered.
Both Chonticha Marijne & Darrell Van Zyl are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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