Abstract
Purpose: To evaluate axial length before and after the photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK). Setting: Alhokama Eye Center, Riyadh Saudi Arabia. Design: A cross-sectional study. Methods: The study sample was comprised of 106 eyes of 54 patients. Patients were divided into 2 groups based on whether they had photorefractive surgery (PRK group) or laser in situ keratomiluesis (LASIK group). The intra-group comparison was performed of the changes in axial length before and after surgery using IOLMaster. P P < 0.00001, both intra-group comparisons). Conclusion: There was a statically significant decrease in the axial length measurements after PRK or LASIK for myopia.
Highlights
While the epithelium is debrided in photorefractive keratectomy (PRK), it is preserved as an epithelial flap in the PRK variant, laser subepithelial keratomileusis (LASEK)
The excimer laser ablation is performed under a lamellar flap that is created with a microkeratome or scanning pulsed laser in laser in situ keratomileusis (LASIK) [2] [3]
We compare the difference in axial length before and after PRK and LASIK, and no study compares this difference between these two procedures before
Summary
Keratorefractive (corneal) procedures include radial keratotomy (RK), photorefractive keratectomy (PRK), laser in situ keratomileusis (LASIK), and laser subepithelial keratomileusis (LASEK) [2]. A 193 nm argon-fluoride excimer laser decreases refractive error by ablating the anterior corneal stroma to create a new radius of curvature. The excimer laser ablation is performed under a lamellar flap that is created with a microkeratome or scanning pulsed laser in laser in situ keratomileusis (LASIK) [2] [3]. We compare the difference in axial length before and after PRK and LASIK, and no study compares this difference between these two procedures before
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