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First, whatâ??s in common?

Wavefront LASIK (also called Custom LASIK), and traditional LASIK both:

· Use an excimer laser

· Create a tiny flap on the corneal surface to expose the underlying tissue to be worked on

· Modify the shape of the cornea by vaporizing tiny pieces that were impairing your vision

· Are extremely precise

Advantages of Wavefront (Custom) LASIK

It provides particularly precise information on how your vision is impaired. Custom LASIK measures each eye with a special laser, using wavefront technology, and creates a 3-D map of the eye. This is translated by the Wavefront system into mathematical information thatâ??s used to guide the laser in correcting the problems.

Two types of vision problems

· Lower order aberrations â?? nearsightedness, farsightedness and astigmatism.

· These are refractive errors and are correctable by traditional LASIK surgery.

· Higher order aberrations (HOA) â?? halos around lights, impaired night vision, starbursts etc.

· These are not refractive errors and not correctable by traditional LASIK, but can be measured and corrected by Wavefront LASIK.

The HOAs are sometimes created by traditional LASIK, and although there are still some who argue that Wavefront LASIK can also create them, most refractive surgeons agree that itâ??s much less likely to create them than traditional LASIK.

· About 75% of refractive surgeons now use Custom LASIK.

· Amount vs. quality of vision

Amount â?? A person with 20/20 vision is said to have perfect eyesight. Thatâ??s an

assessment of the personâ??s AMOUNT of vision, or how MUCH he sees. Impairment of our amount of vision is brought about by lower order aberrations.

Quality â?? How WELL we see is determined by the presence or absense of higher order aberrations. So if we have impaired contrast sensitivity and canâ??t see very well at night, or we have glare and halos around lights, these defects can be both measured and treated by Wavefront LASIK.

The Wavefront LASIK procedure

· The eye surgeon sends a light ray into your eye

· The light is reflected back off the retina (interior surface of the back of the eye, like the film in a camera) to the Wavefront system

· The system arranges this modified light into a pattern of all your vision aberrations, lower and higher

· It displays this pattern on its computer monitor as a 3-D map of each eye, the wavefront map

· When your eye surgeon applies the laser treatment to your eyes, he uses this same information to guide the laser.

Unique to you

This all results in a vision remedy thatâ??s unique to you. Unlike glasses and contact lenses, which are remedies that come according to prescriptions that millions of other people also have, this treatment is entirely customized. Thatâ??s another way of saying that itâ??s extremely precise, so precise that nobody else would benefit from it. Theyâ??d all have their own 3-D maps.

Pre-testing with traditional LASIK

Before traditional LASIK, there are also tests done to pinpoint the corneal problems.

Theyâ??re done using a variety of devices which each give a different kind of information. For example:

· The photopter â?? you look through various pairs of lenses and tell the eye doctor which set gives you the best clarity

· The corneal topographer â?? collects reflected infra-red light from your eyes and creates a digital map of each eye

· Fluoracaine or some similar dye â?? stains the corneal surface so that your eye doctor can see more clearly where the irregularities are

These tests give a lot of information, but not to the precise detail of the wavefront technology. They also take longer.

Wavefront diagnostic

If youâ??re considering a LASIK procedure, whether LASEK, PRK, or Epi-Lasik, or traditional LASIK, you can have a wavefront diagnostic done first. This will indicate the severity of any HOAs you may have. This information in turn will guide your eye surgeon in recommending the best procedure for you.

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The wonderful results of Lasik surgery have been improved by research adding new methods, such as Wavefront technology. This technology gives a Lasik physician the ability to see and accurately map even slight variations in the surface of the eye. This gives the physician the ability to more accurately tailor a Lasik operation to the individual, and result in even clearer vision.

The concept behind Wavefront technology was originally developed by astronomers, in order to indicate if a mirror or a lens had slight imperfections in it. It is very important in astronomy to get near perfect optics in order to clearly see the small light sources million of miles away in the universe. In the 1970s a sensor was created to electronically check these surfaces, and a type of this sensor is now used in the Wavefront guided Lasik procedures.

The idea to apply this technique, or to use this sensor, to the field of ophthalmology and later to the specific area of Lasik vision correction, was begun in Germany. The physician Josef Bille began using the sensor in his practice, and this started others to refine the sensor and how it is used and to apply it to Lasik technology. In 1997 the improved sensor, with greater accuracy and speed, was announced to the Lasik laser manufacturers. This allowed the companies that manufacture the Lasik equipment to develop tools using the Wavefront concept for each of their own laser systems.

The FDA approved the first Wavefront guided Lasik vision correction system for general use. Initially, the Wavefront sensor makes a map of the eye’s imperfections, and this map is sent to the laser that is used in the Lasik vision correction portion of the operation. This allows for precise eye alteration in order for Lasik to present the best vision correction possible.

The Wavefront technology used in Lasik can be described easily at an informal level. A small, flat sheet of light (called a wavefront) is passed through the eye, reflected off of the retina, and passed back through the eye and is captured by the Wavefront machine. If the eye were perfect, the light would return as a flat sheet and be captured that way by the Lasik machine. However, any imperfections changes the way that the light returns, and this is detected by the Wavefront part of the Lasik process.

A number of these small, flat sheets of light are sent into each eye from various directions and the results returned generated a three dimensional map of the eye to be used in the Lasik vision correction process. In addition to the commonly known problems of nearsightedness, farsightedness, and astigmatism, there are more than 60 other patterns that are known and can possibly be corrected for.

All of this information generated by the Lasik sensor is converted by software into a set of directions to be carried out by the Lasik excimer laser. Ask your doctor about this exciting advance in Lasik vision correction, and see if this procedure is right for you!

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Let’s walk through what a client experiences when attending a Lasik center for a Wavefront Lasik procedure. The procedure itself generally only takes between five and ten minutes for each eye in total, and both eyes are done during the same procedure. The actual time to reshape the eye with the Lasik excimer laser is usually less than 15 seconds per eye.

Any person’s vision problems are generated by small “aberrations” within the eye that prevents the light from focusing objects as they should. The Lasik equipment locates and classifies these aberrations and then processes them so that the Lasik physician will correct these and allow the light to focus properly once the eye has healed.

In a Wavefront Lasik procedure, the patient stares at one point while a light is sent into the eye, which is reflected back and read by a Lasik Wavefront sensor. The distortions in this reflected light are mapped using a small computer within the Lasik system, and then this information is used to guide the laser that treats the eye.

Once the light creates the map for the eye, the Lasik surgeon has to create a small flap to access the cornea. This is done using a laser (this type of Lasik procedure is known as IntraLasik, or bladeless Lasik) or a small blade known as a microkeratome.

This flap is then opened to allow the cornea to be reshaped by the Lasik system.The excimer laser actually reshapes the cornea, which is the crucial part of the Lasik procedure. In order to determine exactly how to reshape it, the map created earlier by the Wavefront sensor is used to direct the beam of light accurately. The Lasik physician uses these precise tools to get the clearest vision results possible.

This custom Lasik procedure can not only correct such standard problems as nearsightedness, but can also address aberrations that create light halos, glare, haze, or starburst patterns. Once the Lasik physician determines that all relevant aberrations have been eliminated, he replaces the flap in its proper position, where it adheres normally and will heal naturally.

As mentioned earlier, this entire Lasik process takes between ten and fifteen minutes per eye. A patient gets a mild sedative and eye numbing drops to make the procedure both relaxing and painless. Most people notice an improvement in vision due to Lasik almost immediately.

Once the Lasik procedure is finished, you will get some eye drop medication to lubricate and protect your eyes. This medication (and the liquid in the drops themselves) may cause some blurring, and so for this reason (and to avoid any eyestrain) you should arrange for someone else to drive you home. It is also a good idea to go to sleep as soon as possible after the Lasik operation in order to promote even faster healing.

To promote optimal healing the Lasik physician often gives a plastic shield to wear over your eyes for the first night or two. Follow closely any recommendations by the Lasik physician. Do further investigation into this great new Lasik procedure, and get a clearer focus on your future!

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Thanks TLC Laser and Dr. Tooma! I went from -4.25 to 20/20 vision. The operation was less than 10 minutes and pain free! I can now see and it was worth every dollar I payed!!

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Using the most advanced LASIK and implantable lens technology with an unrivaled focus on patient care, Dr. Feldman is committed to giving her patients visual freedom through a variety of state-of-the-art eye surgery procedures. When you trust Dr. Feldman with your vision, as so many of her medical colleagues have done, you will receive the right vision correction treatment for your eyes. You will get all the one-on-one time you want with San Diegos leading LASIK and cataract surgeon. She even offers late appointments after work and Saturday appointments!

If you are ready to improve your vision and quality of life, please call or email us today to schedule a complimentary LASIK consultation or a complete eye exam for a cataract evaluation. During your appointment, Dr. Feldman along with her professional staff will answer all your questions about iLasik™, wavefront-guided LASIK, all laser Custom LASIK with IntraLase®, or the vision correction option that is right for you, address any concerns you may have, and explain all of the options available to correct your vision.

Video Produced by Spore Medical
http://www.sporemedical.com

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Short video on why a patient has LASIK Eye Surgey at the May Eye Care Center in Pennsylvania.

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This is the Science Friday (National Public Radio) video about LASIK eye surgery. The funny thing about this video is that the narrator, who is probably also the producer, is a lot more nervous about LASIK laser vision correction than the patient himself. He is cool as a cucumber, I had LASIK myself, didn’t think it was a big deal and now I see fantastic. The video features Steven Vale, M.D., medical director of Acuity Laser Eye & Vision Center in Bethlehem, Pennsylvania. Dr. Vale is one of the most well-respected and experienced Lasik surgeons in the world. Dr. Vale has performed over 21,000 laser vision correction surgeries. Dr. Vale’s ability and experience really comes out in this otherwise realistic and detailed glimpse at the world of laser vision correction surgery.

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Learn about the exciting WaveFront CustomCornea treatment performed by Dr. Robert Lin, MD. Dr. Lin is a graduate and Assistant Clinical Professor at UCLA School of Medicine (Jules Stein Eye Institute), and has performed over 15,000 refractive procedures, and is also a board-certified ophthalmologist. The Council for Refractive Surgery Quality Assurance (CRSQA) has distinguished Dr. Robert Lin as one of the few CRSQA Certified Refractive Surgeons in the United States.

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Technorati Tags: astigmatism, cornea, correction, custom, eye, farsighted, laser, Lasik, nearsighted, surgery, vision, wavefront