The Femto-LASIK Procedure
All-laser LASIK, bladeless LASIK, IntraLASIK
The individual LASIK or Femto-LASIK is a wavefront-guided All-Laser LASIK that allows customization of all steps of the LASIK procedure. It permits the individual correction of the refractive error for optimized results.
How does the Femtosecond Laser work?
The femtosecond laser emits ultra-short light pulses that create very high energy densities temporarily in the interior of the cornea. This means photo disruption only occurs in the focal point while tissue outside the defined area remains untouched. A complete cut in a level is achieved by placing thousands of laser pulses next to each other. Then the cornea flap is lifted up with a precision instrument.
The femtosecond laser is used for the initial part of the LASIK surgery when the corneal flap is prepared. The surgeon then switches to an excimer laser to achieve the cornea ablation and correct the visual disorder.
A special contact glass is placed on the eye for the laser pulses to pass through and focus into the cornea. The surgeon uses a microscope to follow the progress of flap creation.
After the cut is completed, the contact glass is removed. Using a fine instrument, the flap is folded back exposing the stromal bed of the cornea.
At this point, the excimer laser is used for the corneal ablation to correct the nearsightedness, farsightedness and/or astigmatism. When the ablation is completed, the flap is folded back and it adheres tightly to the stromal bed without the need for sutures.
During the first few hours after surgery, a foreign body sensation and increased production of tears may occur. The vision will be blurry. One day after surgery, vision will be nearly normal. Slight changes in vision may occur within the first few weeks, with vision stability usually reached after 4 to 6 weeks.
High Precision Flaps Enhance LASIK Safety
The computer-controlled femtosecond laser allows the surgeon to achieve the highest degree of corneal flap precision. Level, parallel cornea segments are cut with uniform thickness at the center as at the periphery. This gives the entire corneal flap more stability, it can be folded back and forth easily, and it attaches smoothly. Flap-related complications such as folds (Microstriae), "button-holes", incomplete or severed flaps are a thing of the past.