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Corneal flap thickness during laser in situ keratomileusis
1Department of Ophthalmology, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan. wps59@yahoo.com.tw
The Kaohsiung Journal of Medical Sciences
|February 7, 2007
Summary
Laser in situ keratomileusis (LASIK) flap thickness (FT) correlates positively with central corneal thickness (CCT). Surgeons should verify actual FT during microkeratome use for optimal LASIK outcomes.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Refractive Surgery
Background:
- Laser in situ keratomileusis (LASIK) is a common refractive surgery procedure.
- Accurate corneal flap thickness (FT) is crucial for LASIK outcomes.
- The MK-2000 microkeratome is frequently used for flap creation.
Purpose of the Study:
- To analyze the actual corneal flap thickness (FT) created by the MK-2000 microkeratome during LASIK.
- To investigate correlations between FT and central corneal thickness (CCT), keratometric power, and patient age.
Main Methods:
- A cohort of 62 patients (42 female, 20 male) with myopia or myopic astigmatism underwent LASIK.
- Corneal flaps were created using the MK-2000 microkeratome with a 130-micrometer head.
- Corneal thickness was measured using an ultrasonic pachymeter.
Main Results:
- The average FT was 133.2 ± 15.4 micrometers.
- The average CCT was 540.3 ± 30.3 micrometers.
- A positive correlation was found between FT and CCT (p<0.05).
- No significant correlation was observed between FT and keratometric power or age.
Conclusions:
- Corneal flap thickness in LASIK is positively associated with central corneal thickness.
- Surgeons should routinely inspect the actual corneal flap thickness when using microkeratomes.
- This verification can contribute to improved LASIK surgical planning and outcomes.
