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Reproducibility of corneal flap thickness in LASIK
B J Jacobs1, T A Deutsch, J B Rubenstein
1Department of Ophthalmology, Rush Medical College of Rush University, Chicago, IL, USA.
Ophthalmic Surgery and Lasers
|May 20, 1999
Summary
The Moria LSK-One microkeratome consistently creates reproducible laser assisted in situ keratomileusis (LASIK) flaps near the intended 160-micron thickness. This study validates its precision for ophthalmic surgeons.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Ophthalmic Devices
Background:
- Laser assisted in situ keratomileusis (LASIK) requires precise corneal flap creation.
- Current microkeratome systems lack documented accuracy and repeatability data for flap thickness.
Purpose of the Study:
- To evaluate the precision and consistency of the Moria LSK-One microkeratome.
- To determine if the device reliably creates 160-micron corneal flaps.
Main Methods:
- Retrospective review of 93 eyes from 67 patients undergoing LASIK.
- Measurement of central corneal thickness before and after flap creation.
- Use of the Moria LSK-One microkeratome with a "130" footplate.
Main Results:
- The mean corneal flap thickness achieved was 159 microns (S.D. = 28).
- No significant correlation was found between pre-flap corneal thickness or average keratometry (K) and flap thickness.
Conclusions:
- The Moria LSK-One microkeratome demonstrates reproducibility in creating LASIK flaps near the target 160-micron thickness.
- Surgeons can confidently rely on this microkeratome for consistent flap thickness.
- This study establishes a clinical model for in vivo corneal flap thickness assessment.