Ronald L. VanderLugt, M.D. Laser Surgery Cataract Surgery
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Laser Vision Surgery

Laser Vision Correction is one of the most exciting procedures that we offer. Worldwide over two million Laser Vision Correction procedures have been performed, and last year in the United States there were nearly 900,000 procedures performed. Laser SurgeryFor millions of people who are nearsighted, farsighted, and/or have astigmatism, Laser Vision Correction is a procedure which may eliminate or reduce the need to wear glasses or contact lenses.

Excimer Laser Vision Correction is a state-of-the-art technology in which a computer controlled cool laser reshapes the surface of the cornea. The Excimer Laser has been used since 1989 to treat nearsightedness. Lasik has been performed internationally for 10 years and clinical trials were begun in the United States in 1991. The FDA approved the excimer laser to treat nearsightedness in 1995.

 

Nearsitedness
Nearsightedness or myopia occurs when the curvature of the cornea is too steep. This results in images being focused in front of the retina. In these patients near images are in focus, while distant images are blurred.
Farsightedness
Farsightedness or hyperopia occurs when the curvature of the cornea is too flat. This results in images being focused behind the retina. In these patients, distant images are in focus, while near images are blurred.
Distortion
Distortion or Astigmatism is a condition in which the corneal curvature is unequal, or shaped like a football. This results in blurred or distorted images.
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The Procedure

The Excimer Laser is used to perform two types of vision correction procedures: PRK and LASIK.

 

Photorefractive KeratectomyPhotorefractive Keratectomy can be used to treat low to moderate myopia. In this procedure, topical anesthesia is instilled. Then a lid speculum is placed in the eye to hold the lids open. The corneal epithelial layer is removed. At this point the patient fixates on a light and in less than 60 seconds, depending on the refraction, the Excimer Laser reshapes the surface of the cornea.

 
Laser In-Situ KeratomileusisLaser In-Situ Keratomileusis can be used to treat all degrees of approved myopia, hyperopia and astigmatism. When performing Lasik, topical anesthetic drops are again instilled and a lid speculum is placed in the eye. However, with Lasik a microkeratome is used to create a thin flap of cornea. The flap is folded back, and again with the patient fixating on a light, the Excimer Laser reshapes the corneal surface. The flap is replaced and carefully aligned back on the cornea in its original position.
 

Custom Lasik is now an available option. The VISX Star S4™ Variable Spot Scanning™ Laser with ActiveTrak® utilizes the most advanced technology in vision correction surgery. In addition to corneal topography and thickness, a wave scan analysis is performed which will be used to individualize the laser treatment.

PRK Vs LASIK
The advantages of PRK are that a flap does not need to be created and is therefore simpler. However, there is more discomfort with PRK until the corneal epithelium heals. Many patients will experience some discomfort or irritation. Also, with PRK the vision is blurry for several weeks and may take several months to stabilize. Lasik requires the creation of a corneal flap. However, the safety of recent generations of keratomes has improved greatly. With Lasik there is usually minimal if any discomfort. The vision improves within a few days and stabilizes within a few weeks. Lasik has become the most commonly performed refractive procedure in the United States.
 
Doctor PatientEligibility
The question of whether you are a candidate for Laser Vision Correction depends on a combination of your refractive error and your expectations of the procedure. Currently you must be 18 years old for nearsightedness and older than 21 for astigmatism. You must also have a stable glass prescription over the past year. You should not have any active eye diseases, and some patients with severe dry eyes are not good candidates. Certain medical conditions may also be contraindications, such as rheumatoid arthritis and lupus, especially if they are in an active phase.
In summary, it is important to have an evaluation with your ophthalmologist to determine if you are an appropriate candidate. You should discuss the realistic expectations with your doctor and be aware of the potential side effects and risks.
 

Expectations
Seeing FarIt is important to have realistic expectations for the procedure. Not all patients undergoing Lasik will have perfect vision. Many will see 20/20 and a few will see even better than that after their initial procedure. The vast majority (90%) of low to moderate myopic patients will see well enough to legally drive. However, some may require corrective lenses to sharpen their vision for certain activities. Also, patients in their forties or older may have more difficulty with their near vision, as Lasik only corrects for distance vision. It does not reverse presbyopia nor eliminate the need for bifocals. One option, however, is monovision in which one eye is corrected for distance and the other is corrected for near. If this option seems appealing to you, you should discuss this with your ophthalmologist.

 

Seeing CloseRisks and Complications  As with any surgical procedure there are risks. Every individual patient should weigh the potential benefits which Lasik can provide to the likelihood of experiencing a complication. Patients may develop corneal haze after the procedure. It is usually something the ophthalmologist sees after surgery and may or may not affect the patient's vision. Corneal haze usually resolves with time. However, some patients may describe glare or haze especially at night. This is somewhat related to the depth and size of the ablation, and may be more of a factor in younger patients whose pupils dilate more.

Intra-operative complications may also occur. These are usually related to the creation of the corneal flap with the keratome. The flap may be too thin or a completely free flap may be created. The occurrence of these complications is decreasing, especially with the current generation of keratomes that are used. The frequency of these complications in recent studies was less than 2%. In these instances, the flap is replaced to its natural position. It is allowed to heal for three months and the procedure can again be performed. As with any surgical procedure, there is a very small risk of a post-operative infection. There may be other postoperative complications; however, a recent study reported an overall postoperative complication rate of 2.6%.

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Risks and Complications

Q
How do I know if I am a candidate for Retractive Surgery?

A: You must have a complete eye exam by Doctor VanderLugt who will tell you if you are a candidate based on your eye health and refractive error.

 

Q Can I have both eyes operated on the same day?

A: With PRK you must wait about a month between eyes. However, Lasik is commonly performed on both eyes on the same day.

 

Q How long will the procedure take?

A: PRK will take about 10-15 minutes for one eye. Lasik, which can be done bilaterally, will take about 20-30 minutes for both eyes.

 

Q How soon after the procedure can I return to work?

A: It depends on your occupation, but PRK patients may wish to wait 4-5 days. Many Lasik patients choose to return in 1-2 days.

 

Q How soon after the procedure can I wear makeup?

A: You should wait a week before using eye makeup.

 

Q How long must I wait afterwards to play sports?

A: It depends somewhat on the activity, but generally we recommend about a week. We also strongly recommend wearing sports goggles for certain sports.

 

Q Do insurance companies pay for this procedure?

A: In the United States most insurance plans consider this an elective/cosmetic surgery and do not cover the procedure. Some vision insurance plans are working to add this as a benefit. In some cases you can use your medical flex plan and pay for it with pretax money. You should check with your insurance plan to see if your policy covers any portion of the procedure.

 
Free Screenings Available
We do offer free screenings to evaluate whether you are a candidate for laser vision correction based on your refractive error and your expectations. Please call 269-383-1110 to schedule a free screening. Also, please plan to bring your glasses or a copy of your eyeglass prescription.