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The clinical results of trans-PRK & LASEK (surface ablation) using Amaris 1050RS excimer laser in 860 eyes

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Session Details

Session Title: Presented Poster Session 11: Refractive Surgery New Techniques / Instrumentation / Devices 1

Session Date/Time: Sunday 14/09/2014 | 15:00-17:00

Paper Time: 16:15

Venue: Pod 2 (Poster Village)

First Author: : O.Jungwoo SOUTH KOREA

Co Author(s): :                  

Abstract Details


To evaluate the efficacy, safety, predictability of Amaris 1050RS Eximer Laser in Trans-PRK & LASEK (Surface ablation) to correct myopia and astigmatism and compare the convenience between Trans-PRK & LASEK (Surface ablation)


Jungwoo Oh, MD EOS Eye Center, Seoul, Korea


860 myopic eyes with or without astigmatism were treated by Trans-PRK & LASEK. 179 eyes (92 patients) underwent Trans-PRK and 681 eyes (343 patients) underwent LASEK using Amaris 1050RS Eximer Laser. Uncorrected distance visual acuity (UDVA) at postoperative 3 months was determined as the efficacy and stability factor compared with preoperative corrected distance visual acuity (CDVA). Manifest refraction spherical equivalent (MRSE) was determined as the predictability factor. Two treatment groups (Trans-PRK & LASEK) were compared in terms of UDVA, MRSE at postoperative 2 weeks and 1, and 3 months and Therapeutic contact lens (T-lens) removal day, re-wearing percentage induced epithelial problem after T-lens removal, postoperative pain score (VAS) was determined as the convenience factor.


The percentage of postoperative UDVA of unchanged or gained ≥1 lines was 42.6%, 70.5% and 93.5 % in LASEK group, 78.9%, 93.7% and 96.6 % in Trans-PRK group at postoperative 2 weeks, 1 month and 3 months. No eye of lost ≥ 2 lines of CDVA on both groups at postoperative 3 months. There was no statistically significant difference between two groups in terms of UDVA, MRSE at postoperative 3 months. But UDVA was significant difference between two groups at postoperative 2 weeks and 1 month. UDVA in Trans-PRK group was statistically significantly better than LASEK group. T-lens removal day, re-wearing percentage induced epithelial problem after T-lens removal was significant lower in Trans-PRK group.


Trans-PRK & LASEK (Surface ablation) using Amaris 1050RS Eximer Laser was a safe, effective and predictable procedure in correcting refractive errors. Trans-PRK showed rapid recovery of visual outcomes and had more advantage that shorter T-lens wearing period and lower re-wearing percentage after T-lens removal compared with LASEK .

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