Low, Adeline and Kadir, Azida Juana and Chow, Zi Yun and Khang, Tsung Fei and Singh, Sujaya (2024) Posterior corneal surface stability after femtosecond laser-assisted in situ keratomileusis in patients with myopia and myopic astigmatism. Indian Journal of Ophthalmology, 72 (8). pp. 1118-1123. ISSN 0301-4738, DOI https://doi.org/10.4103/IJO.IJO_2662_23.
Full text not available from this repository.Abstract
Purpose: To evaluate the variation and stability of the posterior cornea surface parameters (posterior cornea curvature PCC], posterior cornea astigmatism PCA], and posterior cornea elevation PCE]) after femtosecond laser-assisted in situ keratomileusis (LASIK) in patients with myopia and myopic astigmatism over a period of 6 months or longer. Methods: This retrospective study comprised 284 right eyes. Patients aged 18 years or older with myopia up to -12.00 D and/or astigmatism up to -6.00 DC and who underwent femtosecond LASIK were recruited. Patients were divided into three subgroups: low myopia (-0.50 to -3.00 D), moderate myopia (>-3.00 to <=-6.00 D), and high myopia (>-6.00 D), according to their pre-LASIK spherical equivalent (SE). The variables included for analysis were PCC (central 0-3.0 mm, pericentral 3.0-6.0 mm, and peripheral region 6.0-9.0 mm), PCE, PCA, internal anterior chamber depth, intraocular pressure, and central cornea thickness at the pre- and post-LASIK stages. Results: The central PCC remained unchanged across all three myopia subgroups at 1 month when compared to the pre-LASIK stage and remained stable at 6 months. The pericentral regions became flatter across all myopia subgroups at 1 month postsurgery (P < 0.001) and remained unchanged at 6 months. This trend was not seen in the peripheral cornea regions, which remained unchanged at 1 and 6 months post-LASIK when compared to pre-LASIK mean readings. There were minimal changes in post-LASIK posterior cornea astigmatism throughout follow-up. There was no incidence of post-LASIK surgery ectasia in this study population. Conclusion: Post-LASIK, the different cornea subregions behaved differently. Overall, the posterior cornea surface remained stable post-LASIK across all myopia subgroups throughout follow-up.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | LASIK; myopia; posterior cornea stability |
| Subjects: | R Medicine > RE Ophthalmology |
| Divisions: | Faculty of Medicine > Department of Ophthalmology Faculty of Science > Institute of Mathematical Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 07 Apr 2025 08:29 |
| Last Modified: | 07 Apr 2025 08:29 |
| URI: | http://eprints.um.edu.my/id/eprint/46734 |
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