Conventional and Wavefront-Guided Myopic LASIK Retreatment

• Published in: American journal of ophthalmology 2006-04, Vol.141 (4), p.660-660.e11
• Main Authors: Jin, George J.C., Merkley, Kevin H.
• Format: Article
• Language: English
• Subjects: Adult; Age; Biological and medical sciences; Cornea - physiopathology; Cornea - surgery; Female; Follow-Up Studies; Humans; Intraoperative Complications; Keratomileusis, Laser In Situ - methods; Lasers; Male; Medical sciences; Middle Aged; Miscellaneous; Multivariate analysis; Myopia; Myopia - physiopathology; Myopia - surgery; Ophthalmology; Patient Satisfaction; Patients; Postoperative Complications; Refraction, Ocular; Reoperation; Retrospective Studies; Statistical analysis; Surgery; Treatment Outcome; Variance analysis; Vision disorders; Visual Acuity - physiology
• ISSN: 0002-9394; 1879-1891
• DOI: 10.1016/j.ajo.2005.11.011

To assess the clinical outcomes of conventional and wavefront-guided myopic laser in situ keratomileusis (LASIK) retreatment. Retrospective, nonrandomized case series. The study comprised a cohort of 97 eyes having LASIK retreatment for residual myopia after primary LASIK. The eyes were divided into two groups: conventional retreatment (CR) group (n = 74) and wavefront-guided retreatment (WR) group (n = 23). The retreatment LASIK was performed using LADARVison 4000 with/without CustomCornea (Alcon Surgical, Orlando, Florida, USA). The mean follow-up was 8.9 ± 5.8 months after retreatment (range three to thirty-six months). The mean pre-retreatment spherical equivalent (SE) was −0.93 ± 0.41 diopters in the CR group and −0.84 ± 0.48 diopters in the WR group ( P = .409). At the last visit, the mean SE was −0.19 ± 0.28 diopters and +0.32 ± 0.47 diopters, respectively ( P < .001). An SE of ± 0.50 diopters was achieved in 92% (68 of 74) of CR eyes and 65% (15 of 23) of WR eyes. In the CR group, 85% eyes had a uncorrected visual acuity (UCVA) ≥ 20/20 and 99% ≥ 20/40, and in the WR group, 35% and 100%, respectively. None of the CR eyes and 17% (4 of 23) of WR eyes lost two lines of best spectacle-corrected visual acuity (BSCVA). Nine percent (7 of 74) of CR eyes and 30% of WR eyes (7 of 23) had optical symptoms before retreatment, the number was reduced to 1% (1 of 74) and 4% (1 of 23), respectively. In the study period with the current equipment, our results showed that conventional LASIK retreatment was superior to wavefront-guided LASIK retreatment in both efficacy and safety.