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Related Experiment Videos

Flap dimensions created with the IntraLase FS laser.

Perry S Binder1

  • 1Gordon Binder Vision Institute, San Diego, CA 92122, USA. garrett@aol.com

Journal of Cataract and Refractive Surgery
|February 18, 2004
PubMed
Summary

The IntraLase femtosecond laser safely and predictably creates accurate corneal flaps for laser vision correction. This technology minimizes risks like cap perforations, though flap elevation technique impacts visual recovery speed.

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Area of Science:

  • Ophthalmology
  • Laser Surgery
  • Corneal Surgery

Background:

  • Laser in situ keratomileusis (LASIK) is a common refractive surgery.
  • Accurate flap creation is crucial for LASIK outcomes.
  • Traditional microkeratomes carry risks such as cap perforations.

Purpose of the Study:

  • To evaluate the safety and precision of the IntraLase femtosecond laser.
  • To assess the predictability of flap thickness and diameter creation.
  • To compare femtosecond laser flap creation with traditional methods.

Main Methods:

  • A prospective study of 103 eyes using the IntraLase femtosecond laser.
  • Flap thickness measured ultrasonically (preoperative vs. post-flap central corneal thickness).
  • Flap diameter measured with calipers.

Main Results:

  • Mean flap thickness ranged from 132.5 to 125.0 micrometers as attempted thickness decreased.
  • Standard deviations for flap thickness decreased from +/-18.5 to +/-12.0 micrometers.
  • Mean flap diameter consistently matched attempted diameter within 0.03 micrometers, with minor exceptions.

Conclusions:

  • The IntraLase laser offers predictable flap diameter, hinge location, and thickness.
  • It eliminates the risk of cap perforations associated with LASIK.
  • Flap elevation technique influences the speed of visual recovery post-procedure.

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