In the procedure of LASIK vision correction, suction in the range of 60-80 mm hg is created using a suction pump. The intention is to try to flatten the cornea which is normally curved. At the peak of the suction a blade or LASER is used to shape a flap. The laser achieves this by multiple bursts of picosecond laser energy applied at a constant predetermined depth.
The blade may be metal or diamond.
Microkertomes may be Rotational or Transitional.
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