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Results with newer bladeless LASIK equivalent to standard microkeratome LASIK

a microkeratome blade occurs in well under 1 percent of all cases. The long-term risks of either procedure, however, are unknown, and defining them is the primary purpose of our study."

The study followed 20 patients who received LASIK for nearsightedness or astigmatism. Each patient was treated with microkeratome LASIK in one eye and bladeless LASIK in the other eye. The researchers found no difference in subbasal nerve density between types of surgery, though the density decreased after both treatments compared to density before LASIK. Corneal sensitivity did not differ between microkeratome and bladeless LASIK. Subbasal nerve density and corneal sensitivity do not impact vision, but rather the potential to heal from a scratch or other injury to the eye. High-contrast visual acuity, the capability to see fine details, and contrast sensitivity, the ability to perceive contrast in objects and their environments, also did not differ between LASIK types. The researchers found corneal backscatter was greater with bladeless LASIK for the first three months after surgery, yet the patients perceived no difference in vision after three months between their eyes treated with bladeless or microkeratome LASIK. Backscatter is haziness in the cornea that is usually invisible to the naked eye and is identified through testing in a physician's office. Cell densities in all layers of the cornea also did not differ between the LASIK surgeries.

The ultimate goal of the Mayo Clinic study of microkeratome versus bladeless LASIK is to obtain long-term information about patients' vision and eye health five years following surgery. The results presented now represent the first six months of findings.


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Source:Mayo Clinic


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