Abstract：
To compare visual and refractive outcomes as well as changes in high-order aberrations in patients with 120- versus 140-µm cap thicknesses 12 months after small incision lenticule extraction. Ninety-four patients were randomized to receive small incision lenticule extraction with either a 120-µm cap thickness (n = 47) or a 140-µm cap thickness (n = 47) to treat myopia or myopic astigmatism, if not both. In an analysis of right eyes only during the 12-month follow-up period, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive outcomes, and high-order aberrations were evaluated. The distribution of patients by age and sex between the groups did not differ significantly (P = .803 and P = .680, respectively). CDVA, spherical and cylindrical refraction, and changes in total high-order aberration, spherical aberration, coma, and trefoil were similar between the groups at 6 and 12 months, postoperatively. However, UDVA was statistically significantly higher in patients with 140-μm cap thicknesses than with 120-μm cap thicknesses at 6 and 12 months postoperatively (P < .001 and P < .001, respectively). Patients with 140-µm cap thickness showed greater improvement in UDVA than ones with 120-µm cap thickness at 12-month follow-up (P = .005). Both 120- and 140-μm cap thicknesses in small incision lenticule extraction were safe and effective thicknesses for correcting myopia or myopic astigmatism. The patients with 140-μm cap thickness had better improvement in UDVA after 12-month follow-up compared to patients with 120-μm cap thickness.
摘要：
比较小切口透镜摘除12个月后120-和140-µm帽厚度的患者的视觉和屈光结果以及高阶像差的变化。94例患者被随机分配接受小切口透镜摘除，帽厚度为120微米（n=47）或帽厚度为140微米（n=47），以治疗近视或近视散光。如果不是两者。在仅在12个月随访期间对右眼的分析中，非矫正视力（UDVA），矫正视力（CDVA），屈光结果，和高阶像差进行了评估。两组之间按年龄和性别划分的患者分布没有显着差异（分别为P=0.803和P=0.680）。CDVA,球形和圆柱形折射，以及总高阶像差的变化，球面像差,昏迷,三叶在6个月和12个月时两组之间相似，术后。然而,术后6个月和12个月，140-μm帽厚度的患者的UDVA在统计学上明显高于120-μm帽厚度的患者（分别为P<.001和P<.001）。在12个月的随访中，帽厚度为140µm的患者的UDVA改善幅度大于帽厚度为120µm的患者（P=.005）。小切口透镜摘除的120-和140-μm帽厚度均是矫正近视或近视散光的安全有效厚度。与120μm帽厚度的患者相比，140μm帽厚度的患者在12个月的随访后的UDVA改善更好。
