How LASIK Works

While LASIK is one of the more commercialized terms, it is actually just one of many procedures that falls under the broader category of Laser Vision Correction (LVC). Most often when someone tells you they have had LASIK, they may have actually had one of the many similar procedures available. No one vision correction procedure is best, each has its own benefits and drawbacks. Part of our job is to select the best procedure given your optics, medical history, and lifestyle needs. Our experience with a vast array of different procedures allows us to utilize our expertise in selecting the treatment that will deliver the best results.

LASIK Explained

Understanding how we see is important to understand how vision correction works. When we look at an image, light passes through the outer most part of the eye called the cornea. From here, the light passes through our lens. The lens is the portion of the eye that is responsible for focusing on objects, either in the distance or up close. As we age it loses its ability to focus resulting in our need of reading glasses. Finally, this image is projected onto the retina which transmits the image to the brain via the optic nerve. Imperfections in vision can be caused by any three of these conditions.

Most vision correction aims to perfect the image entering the eye by reshaping the surface of the cornea. Imperfections in our vision are known as refractive errors. There are three types of refractive errors: nearsightedness, farsightedness, and astigmatism.

Vision correction aims to perfect the image entering the eye by gently reshaping the surface of the cornea.

LASIK and the very similar procedure LASEK work under the same concept: a low energy laser (Excimer Laser) is used to reshape the surface of the eye, returning it to a more natural shape, thus correcting the vision.

The difference between LASIK and LASEK has to do with the way the eye is prepared prior to treatment. With LASIK, a different laser is used to create a microscopic flap. The treatment is applied under the flap allowing the flap to act as a bandage. With LASEK, no flap is made. Instead, the eye is cleaned with a solution and the treatment is applied directly to the surface. After treatment, a contact lens is placed on the eye to act as a bandage. In both procedures the laser treatment used to reshape the eye is exactly the same.

Both methods of laser vision correction are able to effectively treat nearsightedness, farsightedness, astigmatism, or any combination of the three.


Myopia LASIK

Commonly known as nearsightedness, this occurs when the cornea is steeply curved. Light focuses in front of the retina, resulting in blurry distance vision. Myopia is the most common refractive error. A steeper cornea will result in distance vision becoming more blurry. Typically a patient’s cornea will not change and myopia does not worsen with age.


Hyperopia LASIK

Commonly known as farsightedness, this is occurs when the cornea is very flat. Images focus behind the retina, resulting in blurry vision of objects up close. People often confuse this with presbyopia. Presbyopia occurs with age; the natural loses its ability to focus on objects up close. Treatment of presbyopia requires reading glasses and is very different then hyperopia, which does not occur with age.


Astigmatism LASIK

Astigmatism refers to an irregular shape of the cornea. One of the most common vision correction myths is that astigmatism cannot be corrected. This is simply not true! The irregular shape causes light to appear distorted to the retina, giving all vision a blur. Patients that have astigmatism will typically also have either hyperopia, or myopia. In fact, most patients we treat have some amount of astigmatism.

VisuMax The world’s most advanced laser flaps

During LASIK, the first part of the treatment is creating a flap. After treatment, this flap acts as a Band-Aid to promote fast healing and quick results. The surgeon can create the flap with either a mechanical blade device or a femtosecond laser. Our flap laser, the Zeiss VisuMax is the world's most advanced flap laser. It is unmatched in terms of its speed, accuracy and safety. Its speed and design result in the safest and most comfortable all-laser LASIK available.

With a pulse rate of 500hz it is the fastest available. A quicker pulse makes procedures safer and more accurate. By reducing the amount of time the eye is exposed, it greatly reduces the chances of complication.
The surface of the human eye is curved. Thus, the VisuMax patient interface that touches the eye is curved too. It’s the only laser with a curved interface (all others are flat), reducing the amount of discomfort during the procedure.
With an extremely focused laser beam, the VisuMax has the lowest energy laser for safe and precise flaps in just a few seconds.
Laser Eye Institute is proud to be the only LASIK center in Michigan with the Zeiss VisuMax.

The ME80 has the smallest beam size of all excimer lasers. A smaller beam sized is preferred; it allows for more individual pulses in the treatment zone, just like a HD TV.
The MEL80 has the widest FDA approval for treatment of nearsightedness, farsightedness and astigmatism. This expanded range allows patients who may have not been a candidate for LASIK in the past to now have vision correction.
With an extremely focused laser beam, the VisuMax has the lowest energy laser for safe and precise flaps in just a few seconds.
Laser Eye Institute is proud to be the only LASIK center in Michigan with the Zeiss MEL80.

MEL80 The most advanced laser in the world

The MEL80 from Zeiss is the 8th generation in MEL LASIK lasers. In 2013, Zeiss entered the US market. Although their lasers are used world-wide, they are relatively unknown in the US. The MEL80 is the most technologically advanced laser available in the United States. Zeiss has been building lenses, cameras and optics since 1846. Their expertise in optics, in which they manufacture lenses for competing lasers, result in a laser that is extremely precise, safe, and fast.

CustomVue LASIK Wavefront guided treatments for superior results

Unlike conventional LASIK, CustomVue Wavefront guided LASIK treatment offers superior results by treating the unique wavefront imperfections of your optics. By treating these imperfections, results are significantly better than traditional LASIK, especially at night. However, achieving better results with Wavefront LASIK is both an art and science. Dr. Haddad is an industry leader when it comes to CustomVue Wavefront. He has not only worked with the laser manufacturer to improve the platform, but he trains other surgeons on the ins and outs to achieve the best possible results.

The STAR laser uses iris mapping technology to ensure treatment plans are precisely aligned and rotated using a scan of your iris taken during your work-up, and then matched when you’re under the laser. A properly aligned treatment is extremely important to great outcomes.
The VISX STAR laser is capable of both traditional LASIK and WaveFront Guided LASIK. To differentiate this to patients, the brand name CustomVue is given to WaveFront Guided treatments. Dr. Haddad has perfected WaveFront guided treatments and while it costs a little more, CustomVue results are superior when compared to conventional LASIK, and our standard at LEI.
The STAR laser tracks eye movements in 3D. With this technology you don’t have to worry about accidentally moving your eye; the laser automatically tracks motion and adjust the beam angle to ensure treatments are properly applied.
Dr. Haddad & Laser Eye Institute are proud to have been the first center in Michigan to offer VISX CustomVue LASIK, making Dr. Haddad the most experienced CustomVue LASIK surgeon in Michigan.


Your consultation takes about two hours and is complementary. Dr. Haddad will determine if you are a good candidate and the best treatment approach for you.

The "WOW" day. You can see better than ever before. Drive yourself to your first check-up. We'll have you avoid anything that may accidentally injure your eyes.

Typically a few days before treatment, we double check every measurement. Dr. Leland, director of after-care, reviews all initial measurements and answers any lingering questions.

You'll stop using eye drops. We lift most restrictions but still want you to be careful doing a few things while your eyes heal.

The big day! You'll need to take the day off work and because we give you a mild sedative, you will need a driver. Treatment is painless and quick with the worlds fastest lasers.

After a quick check-up, jump into lake St. Clair without worrying about your contacts. Typically there are no restrictions. We'll see you every few months just to track your healing for about a year.