How LASIK Works

While LASIK is one of the more commercialized terms, it is actually just one of many procedures that fall 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 single vision correction procedure is best; each has its benefits and drawbacks. Our expertise in vision correction ensures that we can craft a treatment plan specific to your unique optics, medical history, occupational and lifestyle needs to deliver outstanding results every time.

LASIK Explained

Understanding how we see is important to understanding how vision correction works. When we look at an image, light passes through the outer most part of the eye called the cornea. From there, 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 the need for 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.

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, a contact lens is placed on the eye 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 these three conditions.

What We Can Correct


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 blurrier. Typically a patient’s cornea will not change and myopia does not worsen with age.


Hyperopia LASIK

Commonly known as farsightedness, this 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, which occurs with age; the natural eye’s loss of the 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, rendering one’s vision blurry. Patients that have astigmatism will typically also have either hyperopia, or myopia. In fact, most patients we treat have some amount of astigmatism.

Laser Technology We Use

Zeiss VisuMax The world’s most advanced all-laser LASIK

During LASIK, the first part of the treatment involves 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.

By using a very narrow low energy beam, VisuMax is able to create precise flaps with unmatched level of accuracy resulting in predictable outcomes.

As part of our commitment to offering the absolute best for our patients we were honored to be the first LASIK center in Michigan to begin using the VisuMax in 2014.

iLASIK Visx Star Treatments matched to your unique eye map

Unique 3-D eye maps are used to craft a treatment that uniquely corrects individual defects in optics and is twenty five times more precise than conventional measurements.

During treatment the laser tracks tiny movements in your eye across three different planes repositioning the laser automatically. Patients don’t have to hold their eye still during treatment, Active Track compensates for movement automatically.

Proprietary Iris mapping algorithms are used to precisely align and rotate the treatment using a scan of your iris taken prior to LASIK. Non-centered treatments significantly affect outcomes. Dr. Haddad has researched and lectured on approaches to properly align and center treatments.

Dr. Haddad was the first in Michigan to offer CustomVue Iris Registration and has done more CustomVue LASIK procedures than anyone else in Michigan.

The AMO-Visx STAR laser uses proprietary technology to create a unique eye map that is 100% specific to your optics. This 3-D map, or Wavescan, is twenty five times more precise than conventional measurements used for glasses and contact lenses. The STAR laser then applies this individualized treatment. Thisprocess known as CustomVue Wavefront guided LASIK delivers superior results when compared to traditional LASIK.

Zeiss MEL80 8th Generation Wavefront Laser

The 8th generation MEL80 is the most recent LASIK laser to become available in the US. Zeiss has been building optics, cameras, and lenses since 1846; their expertise in optics (which other lasers use) result in an extremely precise and accurate laser, particularly in patients with higher corrections.

With the widest FDA approval for treatment of nearsightedness, farsightedness and astigmatism patients who may have not been a candidate for LASIK in the past can now have vision correction.

The MEL80 uses an extremely small beam allowing the laser to treat the specific area requiring correction. The treatment algorithm uses this small beam size to accurately treat high prescriptions.

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 was the first LASIK center to make the Zeiss MEL80 available in 2014.


Our consultations are complimentary and take around two hours. Dr. Haddad or Dr. Rautio will meet with you and determine if you are a good candidate for LASIK and your best treatment plan.

A few days before treatment, we double-check every measurement. Our doctors review all initial measurements and explain treatment day step-by-step.

The big day! Although treatment takes just a few minutes you’ll be here a few hours, so plan on taking the day off work. We give you a mild sedative so you’ll also need someone to drive you home.

The “WOW” day. Most patients drive themselves and are able to return to work. We’ll have you avoid anything that may accidentally injure your eyes.

A quick 10 minute visit to track your healing. We typically lift most restrictions but still want you to be careful doing a few things while your eyes continue heal.

Enjoy your great vision. We’ll continue to see you for quick visits to monitor your healing, all your visits for two years are included with every procedure.

Procedures We Offer


LASIK is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism. During LASIK a microscopic, protective flap is created to access the inner cornea. Then, laser light is used to gently reshape the surface of the cornea to alter its focusing power and improve your vision. Lastly, the protective flap is repositioned to protect the eye and aid in healing. For most patients their vision improves immediately after treatment.


LASEK is similar to LASIK but uses a different method to expose the cornea for laser treatment. In LASEK, instead of a flap the surface of the eye is treated with an alcohol solution and then laser treatment is applied. A bandage contact lens is placed over the eye afterwards to promote healing and provide protection, instead of a flap. Vision improves gradually after LASEK and the bandage contact lens is removed after about one week.


SMILE, while related to LASIK, works differently. Treatment is instead applied slightly below the surface of the eye. This method is even less invasive than LASIK and overall a gentler procedure. Patients whom did not qualify for LASIK may now qualify for SMILE. Dr. Haddad was the first surgeon in Michigan to perform SMILE in 2017