June 2017
Volume 58, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2017
Refractive outcomes of moderate astigmatism correction using wavefront-guided and wavefront-optimized PRK and LASIK
Author Affiliations & Notes
  • Rose Kristine Sia
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Denise S. Ryan
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Bruce Rivers
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Joseph F Pasternak
    Ophthalmology, Walter Reed National Military Medical Center, Bethesda, Maryland, United States
  • Richard D Stutzman
    Ophthalmology, George Washington University, Washington, District of Columbia, United States
  • Lamarr Peppers
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Jennifer B. Eaddy
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Lorie Logan
    Warfighter Refractive Eye Surgery Program, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, United States
  • Kraig S Bower
    Ophthalmology, Johns Hopkins University, Baltimore, Maryland, United States
  • Footnotes
    Commercial Relationships   Rose Sia, None; Denise Ryan, None; Bruce Rivers, None; Joseph Pasternak, None; Richard Stutzman, None; Lamarr Peppers, None; Jennifer Eaddy, None; Lorie Logan, None; Kraig Bower, None
  • Footnotes
    Support  W81XWH-09-2-0018
Investigative Ophthalmology & Visual Science June 2017, Vol.58, 5275. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to Subscribers Only
      Sign In or Create an Account ×
    • Get Citation

      Rose Kristine Sia, Denise S. Ryan, Bruce Rivers, Joseph F Pasternak, Richard D Stutzman, Lamarr Peppers, Jennifer B. Eaddy, Lorie Logan, Kraig S Bower; Refractive outcomes of moderate astigmatism correction using wavefront-guided and wavefront-optimized PRK and LASIK. Invest. Ophthalmol. Vis. Sci. 2017;58(8):5275.

      Download citation file:


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

      ×
  • Supplements
Abstract

Purpose : To evaluate the refractive outcomes of wavefront-guided (WFG) and wavefront-optimized (WFO) photorefractive keratectomy (PRK) and laser-assisted in situ keratomileusis (LASIK) in myopic eyes with moderate refractive cylinder.

Methods : Subjects undergoing either PRK or LASIK for myopic astigmatism were randomized to either WFG or WFO treatment. WFG treatment surgeries were performed using the VISX CustomVue STAR S4 IR (Abbott Medical Optics) and WFO surgeries were done using Wavelight Allegretto Wave EyeQ (Alcon Surgical). The target refraction was emmetropia in all eyes. Eyes with preoperative refractive cylinder ranging from 1.00 to 2.75 diopters (D) were included in the data analysis. Refractive outcomes including astigmatic changes were assessed and compared among four treatment groups: WFG PRK, WFG LASIK, WFO PRK, and WFO LASIK groups. Vector analysis for refractive astigmatism was performed using Alpins method.

Results : Data analysis included 117 eyes (40 WFG PRK, 25 WFG LASIK, 25 WFO PRK and 27 WFO LASIK) of 76 subjects (mean age 31.5 years ±7.3). Preoperatively, there were no significant differences among treatment groups in either refractive sphere (p=0.45), cylinder (p=0.69) or spherical equivalent (p=0.48). At 6 months postoperatively, there were no significant differences among groups in terms of eyes achieving uncorrected distance visual acuity of 20/20 or better (100% WFG PRK, 100% WFG LASIK, 96.0% WFO PRK, and 95.7% WFO LASIK, p=0.48); spherical equivalent within ±0.50 D of emmetropia (91.2% WFG PRK, 83.3% WFG LASIK, 88.0% WFO PRK, and 100% WFO LASIK, p=0.25); refractive astigmatism (non-vector) ≤0.50 D (94.1% WFG PRK, 87.5% WFG LASIK, 84.0% WFO PRK, and 100% WFO LASIK, p=0.19). Refractive astigmatism corrections were also comparable among treatment groups in terms of magnitude of error (-0.07 D WFG PRK, 0.00 D WFG LASIK, -0.02 D WFO PRK, and 0.04 D WFO LASIK, p=0.53); angle of error within ±15 degrees (100% WFG PRK, 95.8% WFG LASIK, 88.0% WFO PRK, and 100% WFO LASIK, p=0.08) and correction index (0.94 WFG PRK, 1.01 WFG LASIK, 1.02 WFO PRK, and 1.03 WFO LASIK, p=0.39).

Conclusions : Wavefront-guided and wavefront-optimized PRK and LASIK were effective in treating myopic eyes with moderate refractive cylinder. Astigmatic changes induced by refractive surgery using either laser platforms were comparable.

This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.

×
×

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.

×