Early clinical curative effect of sub-bowman's keratomileusis on myopia

Objective To investigate the early clinical curative effect of sub-bowman's keratomileusis(SBK)on myopia and its complications during the surgery.Methods Thirty-six patients(72 eyes)with myopia were treated with SBK by Moria OUP-SBK microkeratome in our hospital from February 2009 to May 2009.Clinical data including the visual acuity,remained diopter,corneal flap thickness ad complications were retrospectively analyzed.Results The uncorrected visual acuity at 1 month after surgery was from 0.5 to 1.5 with an average of 1.05±0.19,which was more than or equal to 0.8 and 1.0 in 70 eyes(97.22%)and 65 eyes(90.28%),respectively.The best corrected visual acuity of all eyes after surgery achieved or exceeded that before surgery.The mean remained spherical equivalent was(+0.05±0.57)D(from-0.88 D to +0.88 D),63% of which was between-0.5 D and +0.5 D.The mean corneal flap thickness was(97.39±5.73)μm(from 87 μm to 119 μm).During the surgery,hemorrhage and epithelium defect in the edge of corneal flap appeared in 9 eyes(12.50%)and 4 eyes(5.56%),wrinkle in the upward of flap was found in 1 eye(1.39%).There was no free flap,button hole flap,breaking flap and significant pain.Conclusion SBK is safe,effective and accurate on myopia with little damage.