Surgery News & Resources - 10 Things You Need To Know About LASIK Vision Correction
10 Things You Need To Know About LASIK Vision Correction
1. LASIK isn’t for everyone
Before undergoing any LASIK procedure, you should have a thorough eye exam. Any good LASIK surgeon will do this to determine whether you’re a good candidate, although some facilities which emphasize profits over quality will do it perfunctorily or even not at all.
Good outcomes are important to a good LASIK surgeon. So it’s in his/her interests as well as yours to test your vision and overall eye conditions carefully before going ahead with any LASIK procedure. If your cornea is too thin, your pupil diameter too large, or the cause of your vision problem is not any refractory error, then you need a solution other than LASIK.
If your vision problem is caused by irregularities in the shape of your corneas:
You may be a good candidate for LASIK. If your vision problem has any other cause, then other procedures will be needed to correct it.
Presbyopia is often mixed up with hyperopia, farsightedness. As we age and start needing reading glasses, we can often still see well in far distances, so it might seem that if LASIK can correct farsightedness, why can’t it correct presbyopia too?
It can’t, because presbyopia is caused not by the shape of the corneas, but by two other things:
So from the combination of those two trends, we have a decreasing ability to focus at different distances. At first we can still see at far distances and just need correction for near distances. But eventually far distances become more of a problem too.
4.The laser used is a cool one
LASIK uses an excimer laser, which is a cool beam of very tightly focused ultraviolet light. There’s no possibility of heat hurting your eyes. All lasers give off heat, but the excimer laser penetrates to only a microscopic depth of the cornea and its action is to vaporize tiny pieces of corneal tissue such that your vision will be corrected. As it does that, its heat is dissipated also. This process is called photoablation.
The excimer laser beam used for vision correction is 0.25 microns wide. That’s about 0.5% of the width of a typical human hair. This microscopic diameter makes it extraordinarily precise.
Wavefront technology is a recent addition to LASIK procedures. It’s also called Custom LASIK, because by so accurately diagnosing the problem, it customizes the vision correction you receive.
Before the procedure is begun, anesthetizing eyedrops are applied. Many of us don’t like to have someone else touching our eyes, and some are alarmed at the idea of a laser shining into their eyes.
Some eye surgeons also offer medication such as Valium if you feel very anxious.
For the first week or so, you need to wear an eye shield when you sleep. This is to prevent pressure being put on your eyes. For the same reason, don’t touch or rub your eyes.
A good eye surgeon will give you a series of follow-up visits, starting the day after your procedure, and then approximately:
These visits are to check on the healing, both short-term and long-term, and on the vision improvement and patient satisfaction.
Many people do achieve 20/20 vision after a LASIK surgery. But a good eye surgeon does not guarantee it. There can be complications sometimes. LASIK will correct only certain eye problems, so if you have any other problem that affects your vision, it remains after LASIK surgery.
And we all grow older and need reading glasses at some point. There are some ways to treat presbyopia and the future will probably bring us more, but LASIK doesn’t treat it.
Article submitted by: Sara Goldstein, firstname.lastname@example.org, 17301 W. Colfax, Suite 275, Golden, CO, USA 80401
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