Dirani, Mohamed and Couper, Terry and Yau, Joanne and Ang, Enk K. and Islam, F. M. Amirul and Snibson, Grant R. and 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. ISSN 0886-3350
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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.
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|Item Type:||Article (Commonwealth Reporting Category C)|
|Item Status:||Live Archive|
|Additional Information:||© 2010 ASCRS and ESCRS. Published version deposited in accordance with the copyright policy of the publisher.|
|Depositing User:||epEditor USQ|
|Faculty / Department / School:||Historic - Faculty of Sciences - Department of Maths and Computing|
|Date Deposited:||19 Jan 2012 07:27|
|Last Modified:||03 Nov 2014 01:27|
|Uncontrolled Keywords:||clinical evaluation; eye refraction; intermethod comparison; keratomileusis; laser surgery; myopia; photorefractive keratectomy; postoperative period; treatment outcome; vision; visual acuity|
|Fields of Research :||10 Technology > 1004 Medical Biotechnology > 100402 Medical Biotechnology Diagnostics (incl. Biosensors)
11 Medical and Health Sciences > 1113 Ophthalmology and Optometry > 111303 Vision Science
11 Medical and Health Sciences > 1113 Ophthalmology and Optometry > 111302 Optical Technology
|Socio-Economic Objective:||E Expanding Knowledge > 97 Expanding Knowledge > 970111 Expanding Knowledge in the Medical and Health Sciences|
|Identification Number or DOI:||doi: 10.1016/j.jcrs.2010.04.041|
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