Femto-LASIK and LASIK differ only in one simple fact: how the corneal flap is prepared. During LASIK, a mechanical microkeratome is used, whereas in Femto-LASIK a bladeless laser, the femtosecond laser, cuts the flap.

Synonyms

Laser-LASIK, All-Laser-LASIK, Intra-LASIK, Intralase-LASIK 

Indication
  • Nearsightedness up to -10 dpt. max.
  • Farsightedness up to approx. +3 dpt.
  • Astigmatism up to approx. 4 dpt. 

Over 90% of all patients with refractive errors are eligable for the LASIK and therefore also Femto-LASIK procedure. 

Benefits

The benefits of Femto-LASIK are equal to those of LASIK. Due to the use of a laser, Femto-LASIK offers additionally higher precision, higher safety and better results:

Highest precision

The femtosecond laser cuts homogeneous flaps of uniform thickness and shape. Flaps prepared with a mechanical microkeratome show fluctuations of lamellar thickness of up to 50 µm, where as the femtosecond laser stays within 5 µm. In addition, laser-cut corneal flaps are more stable and can be reliably and accurately folded back after the procedure.

Highestsafety

Due to the use of the femtosecond laser, cut related complications such as incomplete flaps or botton holes are eliminated. In addition, infections are almost impossible because the laser cannot transmit any germs. Also, epithelial ingrowth has not yet been reported after Femto-LASIK.

Best possible outcomes

The high precision of the laser allows a better predictability of the result. The correction of refractive errors using Femto-LASIK offers even more accurate results than with LASIK.

At the beginning of the procedure, the eye is fixated and a contact glass is placed onto the anaesthesized eye. The surgeon uses computer software to guide the femtosecond laser beam, precisely defining the diameter and depth of the flap. The laser beams are focused at a predefined depth of the cornea, and the corneal flap is created by placing thousands of laser pulses in a plane next to each other. The surgeon can follow the progress of the procedure through the operating microscope and on a special monitor. After the flap is cut, it is gently lifted and folded back.

Now, the excimer laser is used to reshape the cornea in order to correct the refractive error. Nearsightedness is corrected by flattening the center of the corneal tissue. For the correction of farsightedness, the ablation takes place in a circle around the periphery of the corneal center. If an astigmatism is present, it is corrected by giving the cornea a ball-like shape.

Finally, the corneal flap is replaced and functions as a natural bandaid. The generally painfree healing process takes place on its own within the corneal stroma within a controlled manner.

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