Long-term refractive outcomes and stability after excimer laser surgery for myopia

Article

Dirani, Mohamed, Couper, Terry, Yau, Joanne, Ang, Enk K., Islam, F. M. Amirul, Snibson, Grant R., Vajpayee, Rasik B. and Baird, Paul N.. 2010. "Long-term refractive outcomes and stability after excimer laser surgery for myopia ." Journal of Cataract and Refractive Surgery. 36 (10), pp. 1709-1717. https://doi.org/10.1016/j.jcrs.2010.04.041
Article Title

Long-term refractive outcomes and stability after excimer laser surgery for myopia

ERA Journal ID16326
Article CategoryArticle
AuthorsDirani, Mohamed (Author), Couper, Terry (Author), Yau, Joanne (Author), Ang, Enk K. (Author), Islam, F. M. Amirul (Author), Snibson, Grant R. (Author), Vajpayee, Rasik B. (Author) and Baird, Paul N. (Author)
Journal TitleJournal of Cataract and Refractive Surgery
Journal Citation36 (10), pp. 1709-1717
Number of Pages9
Year2010
Place of PublicationPhiladelphia, PA. United States
ISSN0886-3350
1873-4502
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jcrs.2010.04.041
Abstract

Purpose: To evaluate the long-term refractive outcomes of photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) for myopia.
Setting: Centre for Eye Research Australia, Melbourne, Australia. Design: Comparative case series.
Methods: Preoperative baseline refractions in eyes having PRK, LASIK, or both at 1 multisurgeon center were analyzed from patient databases. Two- to 13-year follow-up data were analyzed and compared with 1-month postoperative visual outcomes.
Results: The study evaluated 389 eyes (229 patients). In the PRK group, the mean preoperative spherical equivalent (SE) was -4.05 diopters (D) ± 1.17 (SD) in eyes with low to moderate myopia and -7.97 ± 2.00 D in eyes with high myopia (P = .009) and in the LASIK group, -3.98 ± 1.27 D and -7.64 ± 1.66 D, respectively (P = .008). At the last visit, the mean SE in the PRK group was -0.64 ± 0.83 D in eyes with low to moderate myopia and -1.06 ± 1.74 D in eyes with high myopia (P = .73) and in the LASIK group, -0.33 ± 0.59 D and -0.63 ± 0.90 D, respectively (P = .68). At the end of the study, 45.9% of eyes with low to moderate myopia and 25.0% with high myopia in the PRK group and 64.8% and 37.3%, respectively, in the LASIK group were within ±0.50 D of the attempted correction. Conclusions: Laser refractive surgery effectively treated all levels of myopia. Refractive stability was achieved within 1 year postoperatively, with LASIK showing better stability than PRK for up to 6 to 9 years.

Keywordsclinical evaluation; eye refraction; intermethod comparison; keratomileusis; laser surgery; myopia; photorefractive keratectomy; postoperative period; treatment outcome; vision; visual acuity
ANZSRC Field of Research 2020320602. Medical biotechnology diagnostics (incl. biosensors)
321204. Vision science
321202. Optical technology
Public Notes

© 2010 ASCRS and ESCRS. Published version deposited in accordance with the copyright policy of the publisher.

Byline AffiliationsUniversity of Melbourne
Department of Mathematics and Computing
Institution of OriginUniversity of Southern Queensland
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