A Novel Corneal Remodeling Technique of Laser Asymmetric Keratectomy in Keratoconus Suspect: A Retrospective Case Control Study
Year: 2024
Type: article
Abstract: Purpose: This retrospective case control study report includes 4 eyes of 4 patients (aged from 37 to 44 years) with keratoconus suspect (KCS) who underwent laser epithelial keratomileusis linked laser asymmetric keratectomy (L-LAK) as corneal remodeling technique in order to avoid postoperative corneal ectasia. Patients and Methods: Four eyes of 4 patients showed corneal topography findings with abnormal localized steep keratometric curvature greater than 47.0 D and peripheral corneal thickness asymmetry (Total corneal central thickness deviations in four directions on Orbscan map (SUM)≥80 µm). L-LAK could be performed both the original ablation of refractive errors (SE from -1.25 to -5.50 D) and the customized ablation (selective ablation of the thicker peripheral cornea averaging:64 µm selectively and the central cornea of the myopic shift due to LAK averaging-1.50D. The main outcome measures between preoperative and postoperative 2 year were refraction, visual acuity (UDVA), keratometry, corneal symmetry evaluating SUM. Results: After 2 years, SEs (D, average) were -0.34, UDVA (LogMAR) was 0.00. keratometry including Kmax was markedly decreased, SUM had diminished markedly. There were no case of postoperative adverse effects. Conclusion: L-LAK resulted in a decreased SUM, increased corneal symmetry, and no postoperative corneal ectasia with good visual outcomes in myopic patients with KCS.
Source: Clinical ophthalmology
DOI: 10.2147/opth.s486687
Authors: Ji Sang Min, Byung Moo Min
Institutions: Yonsei University, Yonsei University Health System
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,320
OpenAlex ID: W4403948157