Related Experiment Video
Updated: Jun 18, 2026
05:14
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
[Clinical evaluation on the cornea flap with different thickness after LASIK]
Feng-Ju Zhang1, Li-Na Chen, Ning Guo
1Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing 100730, China. wxw93@hotmail.com
[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|December 5, 2009
Summary
Thin cornea flaps after LASIK surgery show more cell injury and tissue changes compared to thick flaps. Despite these morphological differences, visual outcomes like refraction, wavefront, and contrast sensitivity remain comparable between thin and thick flap groups.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Confocal Microscopy
Context:
- Laser-Assisted In Situ Keratomileusis (LASIK) involves creating a corneal flap.
- Corneal flap thickness can influence post-operative healing and tissue morphology.
- Understanding these changes is crucial for optimizing LASIK outcomes.
Purpose:
- To investigate morphological changes in corneal tissue using confocal microscopy between thin and thick LASIK flaps.
- To compare visual function, including refraction, wavefront analysis, and contrast sensitivity, between the two groups.
Summary:
- Confocal microscopy revealed significant morphological differences in corneal flaps, with thin flaps exhibiting greater cell injury and tissue alterations.
- Specifically, thin flaps showed increased wrinkle and acellular areas, and altered cell activation compared to thick flaps.
- Despite these microscopic differences, no significant variations in refractive correction, wavefront aberrations, or contrast sensitivity were observed between the thin and thick flap groups post-LASIK.
Impact:
- This study highlights that while thin LASIK flaps undergo more severe cellular changes, clinical visual functions are not significantly compromised.
- Findings suggest that LASIK flap thickness may not be a critical determinant of visual acuity and quality in the short to medium term.
- Provides insights into the tissue-level response to LASIK, informing surgical technique and patient selection.
