Abstract
Purpose of the study
The purpose of the study is to assess and compare the corneal flap thickness predictability and uniformity between Visumax femtosecond laser and Moria sub-Bowman keratomileusis microkeratome in laser in situ keratomileusis procedure to correct myopic and myopic astigmatism refractive errors.
Methods
One hundred eyes from 100 patients were enrolled in this study. Only one eye (right eye) of each patient was chosen for this study.
They were divided into two groups of equal size (50 each). Target flap thickness was 90 μm.
Flap thickness was measured by anterior segment optical coherence tomography in 7 specified positions at 3 months postoperative.
Results
For femtosecond laser group, the average central flap thickness (CFT) was 91.35 µm ± 4.97. There was no statistically significant difference between the target flap thickness and the resultant flap thickness (p = 0.12). When the central, nasal and temporal thicknesses in the same flap were compared, there was no statistically significant difference among these measurements (p = 0.9).
For the microkeratome group, CFT was 102.18 µm ± 5.63. There was statistically significant difference between the target flap thickness and the resultant flap thickness (p = 0.001). The central, nasal and temporal thicknesses were compared and there was a statistically significant difference (p = 0.000).
Conclusions
Our study is among few studies in the literature comparing femtosecond laser flap to SBK microkeratome flap. Femtosecond laser creates more predictable flap thickness and more uniform flap architecture.
Trial registration Trial registration number: NCT04684888. Trial Registration date: December 2020. Registered at www.clinicaltrials.gov.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by all authors. All authors read and approved the final manuscript.
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This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of et al. Kindy College of Medicine University of Baghdad. Informed consent was obtained from all individual participants included in the study.
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Rattan, S.A., Rashid, R.F., Mutashar, M.K. et al. Comparison of corneal flap thickness predictability and architecture between femtosecond laser and sub-Bowman keratomileusis microkeratome in laser in situ keratomileusis. Int Ophthalmol 43, 1553–1558 (2023). https://doi.org/10.1007/s10792-022-02551-8
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DOI: https://doi.org/10.1007/s10792-022-02551-8