Did LASIK Surgery In The Past Involve Shaving The Cornea?

Did LASIK Surgery In The Past Involve Shaving The Cornea?

LASIK involves creating a corneal flap, lifting it, reshaping the cornea with a laser, and then repositioning the flap. In the past, however, the flap was created using a blade. Because of this, LASIK was not widely preferred, and LASEK was considered safer, so it was performed more often. Over time, femtosecond lasers were introduced to create the flap, which significantly improved the safety and precision of LASIK, allowing surgeons to make flaps with consistent thickness and accuracy.

What Problems Can Occur When Creating The Flap With a Blade?

A laser-made flap has uniform thickness and shape, whereas a blade-made flap could be less precise. The desired flap thickness might not be achieved, and differences in the speed of the blade at the start and end of the cut could make the flap irregular. Also, when stopping at the hinge portion, depending on the corneal shape, tissue could detach unexpectedly. In fact, most of the complications historically associated with LASIK flaps came from the use of blades rather than lasers.

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