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Higher Order Aberrations Comparison in Fellow Eyes Following IntraLase LASIK With WaveLight Allegretto and CustomCornea LADARVision4000 Systems
PURPOSE
To compare the differences in objective and subjective visual outcomes with wavefront-optimized versus wavefront-guided excimer laser ablations using two different excimer laser platforms.
METHODS
In this prospective, randomized, matched, contralateral eye study, one eye was treated with the Alcon CustomCornea system, and the fellow eye was treated with the WaveLight Allegretto Wavefront-Optimized system. The IntraLase FS30 femtosecond laser was used to create all flaps. Treatments were randomized to the dominant eye, and optical treatment zones were matched to 6.5 mm. Patients were observed for 3 months after surgery. Initial data analysis was available for the first 28 eyes of 14 patients.
RESULTS
The only statistically significant differences between the groups were seen in the amount of higher order aberrations—the 14 eyes in the WaveLight group had a mean preoperative root-mean-square (RMS) error of 0.37 µm compared to 0.36 µm for 14 eyes in the Alcon group. Of the 8 patients who had 3-month follow-up, 8 eyes in the WaveLight group had a mean RMS error of 0.58 µm at 3 months, compared to 0.41 µm in the 8 eyes in the Alcon group.
CONCLUSIONS
Early results from this study have shown that both laser platforms produce accurate refractive outcomes; however, the Alcon CustomCornea LADARVision4000 system induces statistically significantly fewer higher order aberrations than the WaveLight Allegretto system. [J Refract Surg. 2006;22:S961-S964.]
AUTHORS
From Coastal Laser Vision Medical Group (Tran), and TLC Laser Eye Centers (Shah), Newport Beach, Calif.
Dr Tran is a consultant for Alcon Laboratories Inc and has received a study grant from Alcon Laboratories Inc. Dr Shah received travel support from Alcon Laboratories Inc.
Correspondence: Dan B. Tran, MD, Coastal Vision Medical Group, 3501 Jamboree Rd, Se 1100, Newport Beach, CA 92660. Tel: 949.453.4661; E-mail: dr.tran@coastallaservision.com.