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Table 1 Distribution of preoperative characteristics

From: Five-year outcomes of EVO implantable collamer lens implantation for the correction of high myopia and super high myopia

Parameter HM group SHM group P value
N, eyes 43 40  
Age (years) 27.92 ± 6.09 28.82 ± 5.61 0.61
Gender (male:female) 5:19 7:15 0.40
UDVA (logMAR) 1.46 ± 0.42 1.78 ± 0.34  < 0.001
CDVA (logMAR) − 0.02 ± 0.04 0.12 ± 0.14  < 0.001
Refractive errors (D)
 Spherical − 8.94 ± 1.34 − 14.83 ± 2.90  < 0.001
 Cylindrical − 1.56 ± 1.12 − 1.90 ± 0.91 0.13
 Spherical equivalent − 9.72 ± 1.41 − 15.78 ± 3.06  < 0.001
Keratometric value (D)
 Flat K 43.14 ± 1.44 42.80 ± 1.47 0.30
 Steep K 44.69 ± 1.50 44.30 ± 1.60 0.26
WTW diameter (mm) 11.90 ± 0.44 11.92 ± 0.40 0.83
IOP (mmHg) 14.27 ± 2.99 15.36 ± 3.04 0.10
CCT (mm) 521.35 ± 29.55 526.15 ± 31.24 0.48
Axial length (mm) 27.08 ± 0.99 29.68 ± 1.64  < 0.001
ECD (cells/mm2) 2689.56 ± 286.37 2773.89 ± 206.10 0.14
ICL size (mm) 13.06 ± 0.52 13.12 ± 0.46 0.57
  1. HM high myopia; SHM super high myopia; N number of eyes; UDVA uncorrected distance visual acuity; CDVA corrected distance visual acuity; D diopters; K keratometry; STS sulcus to sulcus; IOP intraocular pressure; WTW horizontal white-to-white diameter; ACD anterior chamber depth; CCT central corneal thickness; ECD corneal endothelial cell density; ICL implantable collamer lens