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Table 2 Time course of aberrations after SMILE

From: Four-year observation of predictability and stability of small incision lenticule extraction

Variables Preoperative 1 Month postoperative 6 Months postoperative 4 Years postoperative P
HOAs (μm) 0.31 ± 0.12 0.48 ± 0.16 0.53 ± 0.17 0.51 ± 0.11 <0.001
Spherical aberration (μm) 0.07 ± 0.15 0.15 ± 0.13 0.17 ± 0.14 0.18 ± 0.14 0.003
Coma (μm) 0.18 ± 0.13 0.36 ± 0.23 0.40 ± 0.23 0.40 ± 0.15 <0.001
Higher-order astigmatism (μm) 0.05 ± 0.03 0.09 ± 0.06 0.09 ± 0.05 0.10 ± 0.06 0.001
Trefoil (μm) 0.14 ± 0.08 0.16 ± 0.08 0.16 ± 0.08 0.16 ± 0.09 0.693
Tetrafoil (μm) 0.06 ± 0.03 0.08 ± 0.05 0.08 ± 0.04 0.08 ± 0.06 0.294
  1. HOAs higher-order aberrations