Related Experiment Videos
Retreatment after laser in situ keratomileusis
J J Pérez-Santonja1, M J Ayala, H F Sakla
1Refractive Surgery and Cornea Unit, Alicante Institute of Ophthalmology, University of Alicante School of Medicine, Spain.
Ophthalmology
|January 26, 1999
Summary
Laser in situ keratomileusis (LASIK) retreatment effectively corrects residual myopia, significantly improving visual acuity and refractive outcomes. While generally safe, increased risks of epithelial ingrowth and flap melting were observed post-enhancement.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Residual myopia after primary LASIK can impair visual function.
- LASIK retreatment aims to correct refractive errors that persist or develop post-surgery.
Purpose of the Study:
- To assess the efficacy, predictability, and safety of LASIK retreatment for residual myopia.
- To evaluate visual acuity, refractive outcomes, and complications following LASIK enhancement.
Main Methods:
- Retrospective case series of 59 eyes undergoing LASIK retreatment.
- Corneal flap lifting and stromal re-ablation using an excimer laser.
- Pre- and post-retreatment assessment of visual acuity, refraction, videokeratography, and tonometry over 12 months.
Main Results:
- Uncorrected visual acuity improved significantly, with 60-61.8% achieving 0.5 (20/40) or better post-retreatment.
- Mean spherical equivalent improved from -2.92 D to -0.44 D (6 months) and -0.61 D (12 months) (P < 0.001).
- Epithelial ingrowth (31%) and flap melting (10.9%) were more frequent post-retreatment, though no vision-threatening complications occurred.
Conclusions:
- LASIK retreatment is an effective and predictable method for correcting residual myopia.
- The procedure enhances visual acuity and refractive outcomes.
- Increased incidence of epithelial ingrowth and flap melting necessitates careful patient selection and monitoring.