Title: Evaluation of the refractive regression of ultrahigh myopia treated with laser in situ keratomileusis
Abstract: Objective To evaluate the refractive regression of ultrahigh myopia(dioptre-9.00 D)treated with laser in situ keratomileusis(LASIK) and to investigate the main influential factors.Methods Seventy-two eyes from 36 patients were divided into two groups according to the diameter of corneal operative area:group Ⅰ(36 eyes),normal LASIK;group Ⅱ(36 eyes),multizone ablation(the diameter of corneal operative area was 6.0,5.5,5.0,4.5 mm respectively).The visual acuity,Diopter,intraocular pressure and corneal thickness was measured in preoperation,1 month,3 months,6 months and 12 months after operation respectively.The relationships between the refractive regression and the relative factors were analyzed.Results There was no significant difference between group Ⅰ and Ⅱ in post-operative visual acuity(P0.05).There was significant difference between group Ⅰ and Ⅱ in the refractive regression(P0.001).Conclusions LASIK was a safe and effective method for the treatment of ultrahigh myopia.The operative area of the corneal cutting was the main influential factor on the refractive regression of ultrahigh myopia treated with LASIK.Local Diopter should be corrected to avoid postoperative complications and refractive regression.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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