Hyperopic LASIK Results with LadarVision, Visx S2 and Visx S3

Abstract

Abstract: : Purpose: To compare LADARVision (LV), Visx Star S3 (S3) and Visx Star S2 (S2) excimer lasers in the treatment of spherical hyperopia and hyperopic astigmatism with LASIK. Methods: Treatment outcomes of 105 hyperopic eyes (41 LV, 25 S3 and 39 S2) with manifest refraction spherical equivalents (MRSE) up to +6.00 diopters were compared. Outcome measures included uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), predictability and stability of treatments at 1 week, 1, 3 and 6 months. Results: All three lasers were comparable in terms of refractive stability and predictability. At 6 months 88%, 88% and 86% of eyes in LV, S3 and S2 groups respectively were within ±1.00 D of intended correction (p=0.953). Mean MRSEs did not show statistically significant difference between lasers (p=0.09) over the follow-up period. At 6 months mean MRSEs were 0.24 D, 0.35 D and 0.51 D for LV, S3 and S2 groups respectively. LV group had consistently better UCVAs than both S2 and S3 groups over the follow-up period. At 6 months LV group had statistically significantly better visual results than S3 at both 20/25 and 20/20 levels. Whereas the only statistically significant difference was at 20/25 level between LV and S2. Better visual outcomes were achieved with S2 than S3 but the differences did not reach statistical significance. Only one eye in S2 group lost more than 2 lines of BSCVA. Conclusion: Predictability and stability of hyperopic LASIK treatments with all three lasers were comparable. Visual results with LV at 6 months were statistically significantly better than both S3 and S2. Visual results with S2 were better than S3 but the difference was not statistically significant .

Keywords: hyperopia • refractive surgery: LASIK • refractive surgery: comparative studies