Zyoptix is the name for a complete system used in newer LASIK procedures. (Learn More) The entire device incorporates wavefront technology, which creates a topographical map of your cornea. This map will be used to program the laser that will reshape your cornea, so irregularities and aberrations beyond the refractive error can be addressed. (Learn More)

This approach has improved vision for thousands of patients over almost 15 years. (Learn More) If you have a high myopia or other refractive error, or other problems like night vision issues that may lead to problems with traditional LASIK, Zyoptix may be able to help you. (Learn More)

woman undergoing lasik procedure

What Are LASIK and Zyoptix?

 

LASIK (laser-assisted in-situ keratomileusis) is a vision-correcting procedure that uses computer-guided lasers to fix refractive errors by reshaping the cornea. The following are the most common refractive errors:

  • Myopia (nearsightedness)
  • Hyperopia (farsightedness)
  • Presbyopia (farsightedness due to age)
  • Astigmatism

astigmatism vs normal vision graphic

These are all caused by problems with the cornea’s shape, which lead to inaccurate refracting of light onto the retina and an unclear picture of the world. LASIK was approved by the U.S. Food and Drug Administration (FDA) in 1998 to treat refractive errors with a simple, fast outpatient procedure. Since its approval, millions of Americans have undergone a type of LASIK procedure, recovered within a few days, and now enjoy near-perfect vision.

There are several types of LASIK, which are typically named based on what kind of technology is involved. One of the newer approaches to LASIK surgery is custom LASIK, which uses wavefront technology to map the cornea’s shape and imperfections. A version of this technology is Zyoptix LASIK.

How Does Zyoptix Work?

 

According to the patent filed with the FDA, the Zyoptix LASIK system is approved for personal vision correction.

  • It reduces or eliminates myopia within a higher tolerance than traditional LASIK.
  • It improves refractive errors for at least one year.
  • It is approved for people who are 21 or older.

The term Zyoptix refers to a specific brand of laser eye surgery system, which incorporates several technological elements to improve the outcomes of a LASIK procedure. By training on technology designed to work together as one complete system, your eye surgeon can improve the outcomes of your operation.

The first step in the procedure, according to the filing, is to create a topological map of the patient’s cornea using a wavefront detector that is compatible with the overall Zyoptix system. Some systems may incorporate two wavefront devices for a more complete picture of your cornea’s irregularities. You will look at a point, and your ophthalmologist can use adjustable optics to “fog” or distort the point. Your doctor will then adjust up to correction then a little beyond, so they can understand how to minimize the risk of overcorrection.

Once your cornea has been mapped, this information will be sent to the lasers in the Zyoptix LASIK system. After your eye surgeon drops some local anesthetic eye drops into your eye, a microkeratome will cut a flap on the top layer of the eye, so the lasers can reach through the pupil, to the cornea. Then, the lasers will begin to reshape your cornea, including adjusting aberrations that can impact your ability to see contrasting colors like black and white, and your ability to see well at night.

There is a warning system that can detect if the surgeon programs in corrections that would reduce the thickness of your cornea beyond a certain tolerance. This means you can safely undergo the corrective surgery if needed.

Advantages and Disadvantages of Choosing Zyoptix

 

Zyoptix improves outcomes from LASIK surgery and reduces the risk of side effects. The study attached to the FDA filing found that, out of 340 participants, 90 percent reported 20/20 or better vision after undergoing Zyoptix to correct their myopia. About 70 percent had 20/16 or better, suggesting that adjusting the cornea to remove additional aberrations improves overall visual acuity, including clarity.

In comparison, traditional LASIK reports that about 90 percent of people achieve 20/40 or better vision, with about 60 percent achieving 20/20 vision. Traditional LASIK uses your refractive error, which is associated with the prescription for your glasses and contact lenses, to reshape your cornea, so getting better than 20/20 vision with that procedure is unlikely.

There are still side effects associated with the Zyoptix LASIK system, just like traditional LASIK.

  • Loss of visual acuity
  • Double vision
  • Sensitivity to bright lights
  • Trouble seeing at night
  • Fluctuations in vision or visual acuity
  • Elevated intraocular pressure
  • Corneal haze
  • Need for a second surgery
  • Corneal infiltrate or ulcer
  • Defect in the corneal epithelium
  • Corneal edema (swelling)
  • Problems with the flap coming loose or becoming infected
  • Misplaced or misaligned flap leading to scar tissue and loss of vision
  • Retinal detachment
  • Retinal vascular accidents

These are very rare risks in traditional LASIK, and several of them are less likely with the help of the Zyoptix LASIK system. However, there is still risk, even if it is diminished.

Scientific Studies Show Zyoptix Benefits Patients

 

Several scientific studies have shown that Zyoptix improves outcomes with LASIK compared to the traditional LASIK procedure.

  • A 2004 study found that the Zyoptix wavefront- and topography-guided procedure for LASIK improved outcomes for most patients. Out of 150 eyes operated on, 126 eyes had clear vision, which represented almost 84 percent of the study participants. Postoperative aberrations were reduced as a side effect compared to the preoperative aberrations. Only nine patients complained about halos around lights at night.
  • Another 2004 study found that Zyoptix provided better postoperative visual performance compared to the Planoscan, which used traditional refractive error measurements to program the lasers. There were also lower rates of higher-order aberrations in wavefront-guided LASIK using the Zyoptix system.
  • A third study, published in December 2004, found in a one-year follow-up that postoperative visual acuity remained at 20/20 or greater for 83 percent of participants, and for 98 percent, their vision remained 20/40 or better. While half the eyes had higher-order aberrations reduced, there were still undercorrections and some induction of aberrations after the surgery, as with traditional LASIK.
  • A 2011 study examined contrast sensitivity after LASIK in people who had high myopia. There were no significant differences in refractive correction in both traditional and Zyoptix LASIK groups, but there was a significant reduction in contrast sensitivity, such as to black words printed on a white background, in the group who underwent traditional LASIK and had high myopia. In comparison, Zyoptix corrected for additional corneal aberrations that reduced the risk of losing contrast sensitivity.

On average, about 70 percent of people who seek LASIK would benefit from Zyoptix.

talking to eye doctor Ask About Zyoptix LASIK Treatment

 

If you have a higher rate of aberrations or a stronger refractive error than is acceptable for traditional LASIK, your ophthalmologist may recommend Zyoptix. Using wavefront technology to map the cornea has improved outcomes for many who receive LASIK treatment, and having an integrated system designed to work together helps your eye surgeon with their training, which means you get a better surgical outcome. While Zyoptix may cost more than traditional LASIK, it is not significantly more expensive.

 

References

 

What Is LASIK? (July 11, 2018). U.S. Food and Drug Administration (FDA).

Summary of Safety and Effectiveness Data. U.S. Food and Drug Administration (FDA).

Wavefront- and Topography-Guided Ablation in Myopic Eyes Using Zyoptix. (February 2004). Journal of Cataract & Refractive Surgery.

Visual Performance Improvement in Zyoptix Wavefront Guided LASIK. (May 2004). Investigative Ophthalmology & Visual Science (IOVS).

Wavefront-Guided LASIK with the Zyoptix 3.1 System for the Correction of Myopia and Compound Myopic Astigmatism with One-Year Follow-Up: Clinical Outcome and Change in Higher Order Aberrations. (December 2004). Ophthalmology.

Contrast Sensitivity After Zyoptix Tissue Saving LASIK and Standard LASIK for Myopia With 6-Month Follow-Up. (2011). Journal of Ophthalmology.