TITLE

Long-term Outcomes of Photorefractive Keratectomy for Low to High Myopia: 13 to 19 Years of Follow-Up

AUTHOR(S)
Vestergaard, Anders H.; Hjortdal, Jesper Ø; Ivarsen, Anders; Work, Kresten; Grauslund, Jakob; Sjølie, Anne Katrin
PUB. DATE
May 2013
SOURCE
Journal of Refractive Surgery;May2013, Vol. 29 Issue 5, p312
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
PURPOSE: To evaluate long-term outcomes after photorefractive keratectomy (PRK). METHODS: A retrospective follow-up study of patients who received PRK at 5.0- to 6.5-mm optical zones, using the Summit broad beam excimer laser (Summit Technology, Inc., Waltham, MA) at Odense University Hospital, Odense, Denmark, between 1992 and 1998. One randomly selected eye of each patient was used in the statistical analyses. Re-treated eyes were excluded. RESULTS: One hundred sixty eyes were included. Mean follow-up time was 16 years (range: 13 to 19 years). Mean preoperative spherical equivalent was -4.84 ± 2.95 diopters (D) (range: -20.25 to -1.25 D). At last follow-up examination, achieved refraction was -1.00 ± 1.56 D (range: -10.75 to +1.00 D) from attempted refraction, and the change in mean refractive error from 6 months postoperatively was less than 1.00 D. Results from a subgroup of unilateral treated patients indicated that myopic progression was the main reason for the residual refractive error . For eyes with low myopia (n = 124), the proportion of eyes within ±1.0 D of attempted refraction was 72%, and for eyes with high myopia (-6.00 D or more, n = 36) it was 47%. Forty-five percent had uncorrected distance visual acuity of 20/20 or better at last follow-up examination. Three eyes (2%) lost two or more lines and 13 eyes (8%) gained two or more lines of corrected distance visual acuity. Fourteen percent had haze (grade 0.5 to 2). Eighty-one percent were satisfied with the surgery. CONCLUSION: PRK for low degrees of myopia seemed safe and effective up to 19 years after surgery with conventional broad beam laser ablation. Refractive predictability was significantly lower and the occurrence of haze was higher in eyes with high myopia. [J Refract Surg. 2013;29(5):312-319.]
ACCESSION #
87556773

 

Related Articles

  • The U.S. Army Surface Ablation Study: Comparison of PRK, MMC-PRK, and LASEK in Moderate to High Myopia. Sia, Rose K.; Ryan, Denise S.; Edwards, Jayson D.; Stutzman, Richard D.; Bower, Kraig S. // Journal of Refractive Surgery;Apr2014, Vol. 30 Issue 4, p256 

    PURPOSE: To compare visual outcomes following photorefractive keratectomy (PRK), PRK with mitomycin C (MMC-PRK), and LASEK in moderate and high myopia in military personnel.

  • Four-year visual outcomes after photorefractive keratectomy in pilots with low–moderate myopia. Chan Hee Moon // British Journal of Ophthalmology;Feb2016, Vol. 100 Issue 2, p253 

    Background The photorefractive keratectomy (PRK) is approved for Air Force pilots in several nations. The occupational environments of pilots in the Air Force are unique, including extremely high altitude, low oxygen tension, high ultraviolet light exposure and high G-force load. The short-term...

  • Flap-Based Procedures Get Nod for High Myopia.  // Review of Ophthalmology;Jun2002, Vol. 9 Issue 6, p144 

    Examines the efficacy of the flap-based procedures for refractive outcomes in eyes with high myopia in Missouri. Factors affecting refractive and visual outcomes in patients; Amounts of astigmatism; Treatment for patients with astigmatic and spherical photorefractive keratectomy.

  • Next-generation lasers are not far behind. Kincade, Kathy // Ophthalmology Times;3/20/95, Vol. 20 Issue 12, p32 

    Reports on the development of second- and third-generation version of laser systems for refractive surgery. Market approval to excimer laser photorefractive keratectomy (PRK) for the treatment of myopia; Years of clinical trials and follow-ups; Viability of excimer-laser PRK.

  • Lower myopia stable at 5 years. Bauman, Norman // Ophthalmology Times;8/15/96, Vol. 21 Issue 22, p35 

    Reports that photorefractive keratectomy (PRK) has remained clinically stable for low and middle myopia, but not for high myopia, according to Theo Seiler, chairman of the Augenklinik in Dresden, Germany. Seiler's claim on the insignificance of changes in best corrected visual acuity;...

  • Presbyopic laser vision correction: Analyzing PRK method at 1 year. Guttman Krader, Cheryl; Eskina, Erika N. // Ophthalmology Times;10/1/2014, Vol. 39 Issue 18, p22 

    The article discusses results from follow-up to 1 year in 16 patients treated with photorefractive keratectomy (PRK) using a multifocal bi-aspheric ablation profile. Topics discussed include the concept of the PresbyMax principle, the number of patients with myopia and hyperopia that were...

  • Comparison of Three Epithelial Removal Techniques in PRK: Mechanical, Alcohol-assisted, and Transepithelial Laser. Shapira, Yinon; Mimouni, Michael; Levartovsky, Shmuel; Varssano, David; Sela, Tzahi; Munzer, Gur; Kaiserman, Igor // Journal of Refractive Surgery;Nov2015, Vol. 31 Issue 11, p760 

    PURPOSE: To compare the visual and refractive results obtained after photorefractive keratectomy (PRK) in patients who underwent one of three different epithelial removal techniques. METHODS: The authors reviewed the medical files of consecutive eyes with myopia and myopic astigmatism that were...

  • Laser-Assisted Subepithelial Keratectomy versus Laser In Situ Keratomileusis in Myopia: A Systematic Review and Meta-Analysis. Li-Quan Zhao; Huang Zhu; Liang-Mao Li // ISRN Otolaryngology;2014, p1 

    This systematic review was to compare the clinical outcomes between laser-assisted subepithelial keratectomy (LASEK) and laser in situ keratomileusis (LASIK) for myopia. Primary parameters included mean manifest refraction spherical equivalent (MRSE), MRSE within ±0.50 diopters, uncorrected...

  • LASIK past and future. Moadel, Ken; Waring, George O. // Ophthalmology Times;7/17/95, Vol. 20 Issue 27, p15 

    Reports on the outcome of excimer laser keratomileusis in situ (LASIK) for the treatment of myopia. History of LASIK's development; Forms of keratomileusis; Transition from photorefractive keratectomy to LASIK; Equipment used in LASIK.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sign out of this library

Other Topics