March 2012
Volume 53, Issue 14
ARVO Annual Meeting Abstract  |   March 2012
One- Step Transepithelial Topography- Guided Ablation In Treatment Of Myopic Astigmatism
Author Affiliations & Notes
  • Xiangjun Chen
    SynsLaser Clinic, Oslo/Tromsoe, Norway
  • Aleksandar Stojanovic
    SynsLaser Clinic, Oslo/Tromsoe, Norway
  • Filip Stojanovic
    SynsLaser Clinic, Oslo/Tromsoe, Norway
  • Tor Paaske Utheim
    SynsLaser Clinic, Oslo/Tromsoe, Norway
  • Footnotes
    Commercial Relationships  Xiangjun Chen, None; Aleksandar Stojanovic, None; Filip Stojanovic, None; Tor Paaske Utheim, None
  • Footnotes
    Support  Norges forskningsråd
Investigative Ophthalmology & Visual Science March 2012, Vol.53, 1477. doi:
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Xiangjun Chen, Aleksandar Stojanovic, Filip Stojanovic, Tor Paaske Utheim; One- Step Transepithelial Topography- Guided Ablation In Treatment Of Myopic Astigmatism. Invest. Ophthalmol. Vis. Sci. 2012;53(14):1477.

      Download citation file:

      © ARVO (1962-2015); The Authors (2016-present)

  • Supplements

Purpose: : To evaluate one-step topography-guided transepithelial ablation in the treatment of low to moderate myopic astigmatism using iVIS-Suite, 1KHz excimer laser system.

Methods: : Retrospective study of 117 consecutive eyes available for evaluation 12 months after surgery. Pre- and postoperative visual and refractive data and postoperative pain and haze were analyzed. A technique integrating custom refractive- and epithelial- ablation in a single uninterrupted procedure was used. Corneal topography was used for custom ablation planning.

Results: : The mean preoperative spherical equivalent (SE) and the mean cylinder were: -3.22 diopters (D) ± 1.54 (SD) (range -0.63 to -7.25 D) and -0.77 D ± 0.65 (range 0 to -4.50 D), respectively. At 12 months after surgery: no eyes lost ≥ 2 lines of corrected distant visual acuity (CDVA). Safety and efficacy indexes were 1.27 and 1.09, respectively. Uncorrected distant visual acuity (UDVA) was ≥ 20/20 in 96.6% of the eyes. Manifest refraction spherical equivalent was within ±0.5 D of desired refraction in 93.2% of the eyes. Mean root mean square (RMS) wavefront error measured at central 5 mm increased from 0.20 preoperatively to 0.26 μm postoperatively. Refractive stability was achieved from 1 month after surgery and beyond. No visually significant haze was registered during the observation period. Postoperative pain was reported in 4.5% of patients.

Conclusions: : One-step transepithelial topography-guided treatment for low to moderate myopia and astigmatism performed with iVIS Suite laser system, provided safe, effective, predictable and stable results with low pain and no visually significant haze.

Keywords: refractive surgery: PRK • refractive surgery: corneal topography 

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.