Abstract
Objective: To compare the difference of biomechanical changes of cornea between regressive eyes and non-regressive eyes after myopic LASIK, and evaluate the possible roles of these changes on refractive regression following surgery. Methods: Central corneal thickness (CCT) and anterior/posterior corneal curvature radiuses (CCR) were measured in 15 regression eyes and 21 non-regression eyes by scanning slit topography before LASIK and postoperative 1 week, 1 month and 3 months. Results: The CCT was increased with the prolong of follow-up time in both non-regressive eyes and regressive eyes. The posterior CCR was relatively stable, and the anterior CCR at the 3rd month was significantly decreased in comparison with that of week 1 (P=0.002) after LASIK in the regression group. However, in the non-regression group, the postoperative posterior CCR was significantly increased with time, and there was insignificant change in anterior CCR after LASIK. Conclusion: The refractive regression after LASIK is mainly attributed to pan-corneal protrusion rather than central corneal thickening.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 86-88 |
| Number of pages | 3 |
| Journal | Chinese Ophthalmic Research |
| Volume | 23 |
| Issue number | 1 |
| State | Published - Feb 2005 |
| Externally published | Yes |
Keywords
- Cornea
- LASIK
- Myopia
- Refractive regression
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems
- Cellular and Molecular Neuroscience