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Wavefront-guided laser-assisted subepithelial keratectomy in low myopia, myopic astigmatism and high myopia
Authors
A. Foroutan
M.J. Ghempanah
+5 more
M.S. Hashemian
S.J. Hashemian
M.E. Jafari
S. Nabili
A. Sheikh-Hassani
Publication date
1 January 2015
Publisher
Abstract
AIM: To compare the safety, efficacy, predictability, stability and complications of wavefront-guided laser-assisted subepithelial keratectomy (LASEK) in low myopia, myopic astigmatism and high myopia correction. METHODS: A retrospective analysis of 416 eyes were assigned to 3 groups: 159 eyes with low myopia (LM) and mean refractive spherical equivalent (MRSE) of -3.68±1.33 dioptre (D); 161 eyes with myopic astigmatism (MA) and MRSE of -5.99±2.24D and mean cylinder of 2.41±1.07D; and 96 eyes with high myopia (HM) and MRSE of -7.41±0.80D. After an epithelial flap creation, a wavefront-based excimer laser ablation was performed. Safety, efficacy, predictability and stability were evaluated at day 10, 2, 6 and 12mo postoperatively. RESULTS: At 12mo, the MRSE was -0.36±0.31D in LM group, 0.15±0.41D in MA group and 0.58±0.68D in HM group. The uncorrected visual acuity (UCVA) was 20/20 in 90.60 of patients in LM group, 78.90 in MA group and 67 in HM group. Efficacy indices were 0.98, 1.04 and 0.92 in LM, MA and HM groups, respectively. Safety indices were 1.00, 1.07 and 1.05 in LM, MA and HM respectively. Five eyes (3.1) in the LM group gained 1 line. Forty-four eyes (27.3) in MA gained 1-3 lines and eighteen eyes (19.2) of HM group gained 1-2 lines of BSCVA. Only 2 eyes in LM group developed corneal haze. There were not statistically significant differences in efficacy and safety indices amongst three groups. CONCLUSION: Wavefront-guided LASEK is an effective and safe procedure for the treatment of LM, MA, and HM.although in myopic astigmatism the predictability, efficacy and safety indices had been better. ©, 2015, International Journal of Ophthalmology (c/o Editorial Office). All right reserved
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eprints Iran University of Medical Sciences
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Last time updated on 10/10/2019