LASIK Surgey

LASIK Eye Surgery – Improving Vision in Chesterfield and St. Louis, Missouri

Dr. Bruce Cohen has been performing LASIK eye surgery in the Chesterfield and St. Louis, Missouri area since 1994. He has also developed a successful radial and astigmatic keratotomy practice. Dr. Cohen was one of the first LASIK surgeons in Chesterfield or St. Louis trained to use the excimer laser for laser refractive surgery after its approval by the FDA in 1995. Dr. Cohen was honored as one of TLC Laser Vision Centers’ top one hundred laser vision surgeons in the country for 2002.

As it has grown in popularity, LASIK refractive surgery has become a common alternative to glasses and contact lenses for both nearsighted and farsighted people, as well as those with astigmatism. Dr. Cohen’s longstanding expertise gives his patients peace of mind and confidence that they will soon be enjoying sharper, clearer vision.

  • How LASIK Works
  • The LASIK Process – Before, During, and After LASIK Eye Surgery
  • Ideal LASIK Candidates

How LASIK Works 

Clear vision occurs when light rays enter the eye through the cornea, or front layer of the eye, and then refract, or focus, to a single point on the retina. The retina collects this optical information and sends it to the brain, where it is processed as an image. When the eye is too short, too long, or irregularly shaped, the light rays are not able to focus correctly on the retina. The following list details the refractive errors that can be corrected through LASIK eye surgery at our St. Louis and Chesterfield, Missouri offices:

  • Farsightedness (hyperopia): Patients with hyperopia have eyes that are too short. Images do not have enough space to focus properly on the retina. These people can see objects that are far away, but have trouble with close-up things like reading and sewing. 
  • Nearsightedness (myopia): Patients with myopia have eyes that are too long. The light rays entering the eyes focus at a point in front of the retina and, as a result, are unfocused again by the time they reach the retina. These people can see objects that are close up, but objects farther away are blurry. 
  • Astigmatism: Patients with astigmatism have eyes with irregularly curved corneas (the front layer of the eye). Images tend to focus on the retina in two places, causing blurred or double vision. 

During LASIK eye surgery, our Chesterfield and St. Louis surgeon uses a laser to reshape the cornea so that light rays can focus correctly on the retina, thereby producing clear vision. 

The LASIK Process – Before, During, and After LASIK Eye Surgery 

During the patient evaluation, Dr. Cohen will measure your cornea using WaveScan™ technology. This creates a detailed "map" of your eye, allowing him to correct refractive errors such as nearsightedness, farsightedness, and astigmatism, as well as to identify higher order aberrations that cause bothersome effects such as glare and halos around lights at night. Dr. Cohen will then integrate the WaveScan™ map into your LASIK eye surgery. After such careful preparation, Chesterfield, St. Louis, and other Missouri patients can be sure of receiving extremely accurate results.

LASIK, or laser-assisted in-situ keratomileusis, is a two-step outpatient procedure that takes about 15 minutes. To begin, Dr. Cohen will apply topical anesthesia to the eyes. He will then create a very thin flap in the surface of the cornea. With the IntraLase method, pulses of laser light create your corneal flap, which is then lifted. Next, Dr Cohen uses the VISX Star S4™ laser with CustomVue Wavefront technology to reshape the cornea. In cases of nearsightedness, Dr. Cohen reshapes the cornea to bring images into correct focus on the retina. For our farsighted patients, we steepen the cornea so the incoming rays of light can reach the retina and focus properly. For those patients with elevated levels of Astigmatism, treatment includes adjusting the curvature of the cornea using the VISX Star S4™ laser. 

When your LASIK treatment is complete, the flap is securely repositioned into place. This bladeless, computer-guided technology is far more accurate than the mechanical microkeratomes (hand-held devices with a thin metal blade) that many other surgeons use to create the corneal flap. Our commitment at Cohen Eye Associates, Limited is to provide you, the patient, with the ultimate in comfort, safety, and outstanding vision. Dr. Cohen and LASIK with IntraLase can help you achieve all of this—while adding the assurance of knowing you are being treated with the most advanced technology available. The IntraLase method’s superior accuracy allows certain patients who were once ineligible for LASK the opportunity to now participate in this life-changing procedure.

When the desired shape has been achieved during LASIK eye surgery, Dr. Cohen will replace the corneal flap, which will reseal to the eye without the aid of sutures. Patients will need to wear a shield for a day or two, but in most cases will be able to return to work and normal activities after that. Dr. Cohen will be able to provide more specific post-operative LASIK instructions according to patients’ individual lifestyles.

Before undergoing LASIK eye surgery through our Chesterfield or St. Louis locations, patients will be informed of the unlikely, however possible complications of surgery. These may include poor night vision, dislocated corneal flap, and inflammation underneath the flap. These issues, as well as under-correction or over-correction, can generally be treated by our LASIK surgeon with excellent results.

Ideal LASIK Candidates

It is essential that patients’ refractive errors be stable at the time of LASIK eye surgery. This means that their eyeglass prescription should not have changed for at least one year. For this reason, Dr. Cohen requires that his patients also be over the age of 18; refractive errors are rarely stable before then.

Pregnant women and those who are nursing should also delay LASIK until after they have finished nursing, as these conditions can cause refractive error to change significantly.

During your evaluation, you should inform Dr. Cohen of any current or previous eye diseases or injuries to ensure that the correct treatment option is selected. Contact Cohen Eye Associates today to find out if you are a good candidate for LASIK eye surgery at our Chesterfield and St. Louis, Missouri practice. 

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