The more progressive LASIK surgery centers perform in-depth analysis of your eyes as an evaluation procedure to determine if you're a good candidate for the LASIK procedure. The evaluation process, which is largely controlled by computer itself, maps the overall physical makeup of each eye. A traditional eye exam determines your visual abilities and then an exhaustive computer analysis determines if your eyes can be enhanced by the LASIK procedure.

In addition to determining whether or not you're a good candidate for LASIK, the procedure also records quite a bit of data that's specific to your eyes. If you choose to proceed with the LASIK surgery, this data is used to program the computer controlled LASIK equipment to insure that your eyes are modified exactly in the proper manner so as to provide maximum benefit.

How Your Eyes Work

The cornea of the eye is responsible for projecting light onto the retina in order to produce an image. When the cornea is not shaped properly, distortion of the image will occur. This is called a refractive error. LASIK eye surgery can correct refractive errors.

There are three primary types of refractive errors -

1) Myopia is a refractive error in which a person has trouble seeing things at a distance, but they can see things that are close up.

2) Hyperopia is when a person will be able to see things clearly at a distance but cannot see things that are close to them.

3) Astigmatism is the distortion of images caused by irregularities in the shape of the cornea.

LASIK eye surgery is also called refractive surgery because it will reshape the cornea, therefore improving the ability to focus clearly.

Not everyone is a good candidate for LASIK eye surgery. To be a good candidate for LASIK eye surgery, you have to be willing to accepts the risks that go along with this type of surgery. Your eyesight should be stable, meaning that it hasn't changed appreciably over the past several years. Also, you shouldn't have any existing health conditions that would put you at risk while having LASIK eye surgery.

Risks of LASIK Eye Surgery

LASIK eye surgery does carry some risks, such as loss of vision. In some extremely rare cases, the patient may lose vision due to equipment malfunction, scarring or healing related complications.

One common risk of LASIK eye surgery is that any dry eye condition that is experienced right after surgery may hamper the healing process. Signs of dryness are burning, redness and decreased vision. If this dry eye condition persists, you may have to medicate to improve tear duct function and use artificial tears to maintain the proper level of moisture. You must keep your eyes moist after LASIK surgery in order to promote healing.

Things to do Before LASIK Surgery

If you wear contact lenses, either soft contacts or rigid contacts, you should stop wearing your contacts at least three weeks before your initial evaluation by the doctor. On the day of surgery, you shouldn't wear makeup or perfumes. Also, don't wear any fuzzy clothing that is likely to disperse lint.

Make sure that someone goes with you on the day of surgery, since you'll need someone to drive you home after the LASIK procedure. Before the surgery, the doctor may give you medicine to relax you and your vision may be a little blurry immediately following surgery. Also, special eye drops are administered prior to the procedure which can cause additional, but temporary blurriness.

LASIK eye surgery is relatively safe and it can free you from glasses and contacts. Before you commit to LASIK surgery, make sure that you consider all the advantages and disadvantages of having the procedure. Ask the doctor lots of questions so that you can make an informed decision about whether LASIK eye surgery is the right choice for you.