iLASIK vs zLASIK: Which is Better?

The first all-laser LASIK procedure made use of the IntraLase laser to make the flap rather than a blade. When the IntraLase laser is combined with AMO VISX’s proprietary CustomVue wavefront-guided treatment, the resulting procedure is termed “iLASIK”. The IntraLase laser has gone through several upgrades since it was first developed to improve it’s safety and precision. Because the IntraLase flaps can be made to fit like a “manhole” they tend to be more secure than those cut by a blade. Also, if something interrupts the creation of the flap, treatment can be restarted without any ill consequences. Since the introduction of IntraLase, Ziemer, a Swiss company, has introduced a laser to make LASIK flaps. Dr. Dornic has used both of these lasers to perform LASIK. The Ziemer laser is less expensive but it is not as well refined as the IntraLase laser. While the IntraLase laser can make flaps of varied thicknesses and architecture, the Ziemer laser can only make flaps of 3 different thicknesses and 3 diameters. The Ziemer can also only make flaps that are cut in much the same shape as a blade. They are therefore not as secure as an IntraLase flap. Another limitation of the Ziemer laser flap is that unlike the IntraLase laser, your surgeon cannot see the flap being made. Therefore, the surgeon cannot intercede to correct a problem such as misalignment or loss of suction occurring during the creation of the flap. What this means to the patient is that iLASIK is safer (more customizable flaps, lower risk of small, misshapen, decentered or slipped flaps) and the overall results are better with iLASIK than with zLASIK. If you want the safest, most precise LASIK, choose iLASIK.

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3 Responses to “iLASIK vs zLASIK: Which is Better?”

  1. Anne says:

    Hi,

    I am looking at having lasik done and am currently researching these two lasers (offered by the two clinics I am considering).

    According to Ziemer: “The Ziemer Femto LDV laser’s unique method of overlapping low-energy laser spots makes the corneal flap easier to lift with no manipulation of the cornea, say proponents of the system. The Femto LDV produces no inflammation and does not create an opaque bubble layer (OBL) caused by gases injected into the deep stroma of the cornea during the femtosecond laser treatment — a phenomenon caused by other femtosecond lasers that can lead to flap problems and affect visual outcomes after surgery.”

    I notice this article was written last year. Do you still consider Intralase to be the superior?

    Thanks,

    Anne

  2. drdornic says:

    iLASIK is both safer and has a higher success rate than Z-LASIK.

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