How LASIK Works

LASIK Eye Surgery
LASIK Indianapolis

Throughout the LASIK eye surgery content of this page we hope to give you an idea of how LASIK works from the traditional standpoint. For information regarding Blade-FREE LASIK in Indianapolis please visit our page dedicated to this topic. Dr. Earl Lanter performs traditional LASIK with a microkeratome and Blade-FREE LASIK as well.

LASIK laser vision correction can be an amazing eye-opening event for many people. For those who have struggled with glasses and contact lenses, LASIK can be great! For those who have lost contacts at important times or for those tired of glasses fogging up, LASIK can be great! Most patients that undergo LASIK have terrific results but it is important to get a legitimate and unbiased LASIK evaluation to determine your candidacy for the procedure.

What Vision Conditions Can LASIK Solve?


Astigmatism is the inability to focus clearly at any distance. With astigmatism the cornea is shaped more like a football than a basketball. LASIK corrects this oval shape, making the cornea more round and achieving clear vision.


Nearsighted people see close objects clearly – but not distant objects. In nearsightedness, the curve of the cornea is too steep and images are focused in front of the retina. LASIK corrects this condition by flattening the curve of the cornea.


Farsighted people see distant objects clearly, but all other objects are blurred. In farsightedness, the shape of the cornea is too flat and light rays are focused behind the retina. LASIK corrects this condition by shaping the cornea so that it focuses correctly.

Most people do not realize how evolved LASIK eye surgery has become over the past ten years. The level of technology has been improving LASIK so that patients simply get better results. In order to better explain all of the elements of LASIK eye surgery we want to briefly highlight the different types of LASIK eye surgery and what their significance actually is to your vision correction decision. We hope you might find this information useful in your research process. Lanter Eye Care aims to provide only the most credible LASIK eye surgery information. This is critical to determine the best vision correction procedure for your unique eyes.


The LASIK Procedure (ALSO known as laser vision correction)

During LASIK, the ophthalmologist surgeon first applies anesthetic eye drops to numb the eye for surgery. The Cornea is then marked with water-soluble ink to guide replacement of the flap. Next a suction ring is applied that is designed to hold the eye steady and also confirms the pressure of the eye. The surgeon then creates a thin corneal flap using a device called a microkeratome. The surgeon tests for laser alignment and walks the patient through the fixation process. The corneal flap is lifted up, and the laser beam is applied to the exposed interior surface of the cornea to reshape the tissue. The computer-controlled excimer laser removes the tissue under the flap and reshapes the cornea of the affected eye. In less than 60 seconds, high-energy pulses from the excimer laser actually reshape the internal cornea with accuracy up to 0.25 microns, or 1/4000 of a millimeter. The flap is then replaced over the treated area. This corneal flap serves a natural bandage, which eliminates the discomfort associated with other types of refractive surgery, and expedites the healing process. Your doctor will then watch the eye for five minutes to ensure proper healing. Because of the extraordinary bonding properties of the corneal tissue, stitches are not needed to keep the flap in place postoperatively.

The Excimer Laser

Excimer LASIKWhen you hear the word laser, you are probably wondering how can this possibly help in correcting vision. The laser responsible for all of this eye surgery is commonly known as the excimer laser. There are many brands of excimer lasers on the market today and some of them have specific points of differentiation. For an explanation of the excimer laser of choice for Lanter Eye care please call us directly or visit our page on ALL-LASER LASIK technology. The excimer lasers role is to permanently change the shape of the cornea, or the outer layer of the eye. The EXCIMER laser, which is a specific type of "cool" laser, generates its power from light in the ultraviolet range. This cannot be visualized by the human eye. Because the laser does not generate any heat, there is no tissue damage as the result of the laser light. As the treatment with the laser proceeds, microscopic layers of tissue, approximately 1/10th the width of a human hair are removed. The laser is programmed to remove precisely the amount of tissue needed to achieve the desired result.

How does LASIK work? Different types of LASIK eye surgery
What Indianapolis LASIK patients need to know!

Conventional LASIK – (DESCRIBED ABOVE) - This type of LASIK refers to the original form of LASIK eye surgery where a microkeratome is used to make a flap. Once the flap is made the excimer laser is used to correct the shape of the cornea. Conventional LASIK typically does not include wavefront technology also called custom LASIK.

Custom LASIKCustom LASIK – This topic can often be confusing for a patient so make sure to read this section carefully! All eyes suffer from optical aberrations or distortions. Aberrations can be separated into two categories HIGH and LOW. Low order aberrations are the familiar sphere and cylinder of myopia, hyperopia, and astigmatism, measured through refraction and denoted by diopters on your prescription. This is precisely what conventional LASIK was aiming to correct. Higher order aberrations such as trefoil, coma, and other similarly unfamiliar terms cannot be measured with a standard refraction. Instead, they are measured with an instrument called an aberrometer. The aberrometer measures the total amount of aberrations in the eye, including the refraction, and then transforms this complex data into a wavefront map. Aberrometer findings are transferred and then loaded into the excimer laser for treatment. The laser ablation pattern to improve your vision is derived from the total set of aberrations. For more information regarding Custom LASIK or wavefront technology visit our custom LASIK page.

Monovision LASIK – Monovision LASIK is a surgical technique in which one eye is corrected for distance vision and the other eye is corrected for up close vision or reading vision. This version of LASIK is typically performed only on patients over the age of 40 years old and is the only way that an older patient can avoid needing reading glasses. Many people that undergo Monovision LASIK are satisfied with their new vision. Despite the relatively high level of patient satisfaction we typically ask each patient to undergo a contact lens trial prior to having the actual surgery because this will give the most realistic view of what Monovision will be like. Monovision is not for everyone so make sure to consult one of our Indianapolis LASIK experts.


Blade-FREE LASIKTraditionally, a microkeratome is used to create the corneal flap necessary in LASIK eye surgery. Ophthalmologists have found that when complications arise from LASIK they are typically from a poorly created corneal flap. Unlike mechanical instruments, IntraLase technology (Blade-FREE LASIK) is uniquely able to program the dimensions of your flap based on what's best for your eye(s). Then the IntraLase laser (femtosecond laser) creates your flap from below the surface of the cornea-without ever cutting it. This process is done in a series of steps:

Ultra-fast pulses of laser light position microscopic bubbles at a precise depth predetermined by your doctor.

The laser light passes harmlessly through your cornea. Then the laser creates rows of these bubbles just beneath your corneal surface as it moves back and forth across your eye in a uniform plane.

Next, the IntraLase laser stacks bubbles around your corneal diameter to create the edges of your flap. These bubbles are stacked at an angle that is determined by your doctor and is individualized to the way your eye is shaped.

The LASIK doctor will then gently lift the flap to allow for the second step of your LASIK treatment. When treatment is complete, the flap is gently put back into position and the healing process begins.

For more information on Blade-FREE LASIK also known as Intralase visit our page on Blade-FREE LASIK in Indianapolis


No matter what type of LASIK you and your surgeon decide is right, you must understand that there are risks. LASIK is a surgical procedure conducted on the cornea part of the eye. It is crucial that patients are well educated on the potential benefits and risks of this procedure. After your pre-operative evaluation you will have a good idea about the risks and what they imply to your specific situation. It is important to discuss any concerns with directly with your surgeon. Each patient’s vision is different and different treatment options are available in order to give the best possible results. Once again, the only way to determine if LASIK is right for you is to come in and discuss your options with our LASIK coordinator.

Click here for a review of the risks listed by the FDA.

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Schedule a Free LASIK


Seeking an Indiana LASIK eye doctor? Would you like to learn about the potential benefits of LASIK eye surgery? Schedule a LASIK consultation.

Blade Free LASIK with Intralase

The safest LASIK is now available in Indianapolis. Call us to learn why Intralase™ Blade-FREE LASIK is the safest LASIK. BladeFREE LASIK with Intralase™ has been approved both by NASA and the US AirForce. Instead of using a mechanical blade to create the LASIK flap we use Intralase technology which uses a laser instead of a blade to create the first step in the LASIK procedure. To learn more about LASIK eye surgery please visit our web pages on both Intralase Blade Free LASIK and LASIK eye surgery.

The Lastest Technology Intralase Corp

For LASIK eye surgery, Dr Lanter utilizes the advanced VISX Star S4™ Laser with CustomVue™, a state-of- the-art system that provides the most accurate and predictable results for LASIK laser eye surgery.

Financing Options

We offer 0% financing, on approved credit with low fixed monthly payments, no down payment and no pre-payment penalty.

10610 N. Pennsylvania St.
Indianapolis, Indiana 46280
Phone: 317.844.6269
Toll: (866)247-2020

747 East County Line Road
Suite M, Greenwood, IN 46143
Phone: 317.844.6269
Toll: (866)247-2020

Clearwater Springs
5025 E. 82nd Street
Suite 2300, Indianapolis, IN 46250
Phone: 317.598.2020
(Near Marsh Supermarket and next to Panera)