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Table 2 Characteristics of eyes which underwent implantable collamer lens implantation after previous laser vision correction surgery according to the types of previous laser vision correction

From: 3-month surgical outcomes of Implantable Collamer Lens implantation for myopic regression after laser vision correction surgeries: a retrospective case series

Type of previous LVC PRK (n = 21) LASIK (n = 9) P
No. of eyes (right/left) 11/10 4/5 > 0.999
Age (years) 33.38 ± 4.04 38.78 ± 3.00 0.001*
Sex (M/F) 6/15 2/7 > 0.999
Time interval after previous surgery (months) 71.29 ± 5.82 77.89 ± 6.59 0.022*
Central corneal thickness (μm) 452.95 ± 34.69 463.22 ± 39.12 0.455
Preoperative mean keratometry (D) 38.97 ± 1.50 38.94 ± 1.18 0.700
LogMAR UDVA
 Preoperative 0.70 ± 0.28 0.69 ± 0.43 0.982
 3-month postoperative −0.04 ± 0.07 0 ± 0.16 0.657
P (preop vs 3-month postop) < 0.001 0.008  
LogMAR CDVA
 Preoperative 0 0.03 ± 0.07 0.349
 3-month postoperative −0.05 ± 0.06 0 ± 0.14 0.563
P (preop vs 3-month postop) 0.006 0.114  
Spherical error (D)
 Preoperative −2.00 ± 0.48 −3.08 ± 1.95 0.504
 3-month postoperative −0.02 ± 0.28 0.22 ± 0.32 0.051
P (preop vs 3-month postop) < 0.001 0.008  
Cylindrical error (D)
 Preoperative −0.37 ± 0.42 − 0.36 ± 0.33 0.981
 3-month postoperative − 0.24 ± 0.39 −0.19 ± 0.27 0.918
P (preop vs 3-month postop) 0.146 0.301  
Spherical equivalent (D)
 Preoperative −2.17 ± 0.42 −3.26 ± 2.00 0.733
 3-month postoperative −0.14 ± 0.31 0.13 ± 0.30 0.050
P (preop vs 3-month postop) < 0.001 0.008  
Endothelial cell count (/mm2)
 Preoperative 2986 ± 314 3053 ± 233 0.556
 3-month postoperative 2966 ± 388 3076 ± 321 0.319
P (preop vs 3-month postop) 0.476 0.859  
  1. PRK photorefractive keratectomy; LASIK laser in situ keratomileusis; D diopters; UDVA uncorrected distance visual acuity; CDVA corrected distance visual acuity; Values are presented as mean ± standard deviation (range) * significant difference between previous PRK and LASIK group