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Table 2 Type of (primary) procedure, indication, mean age and range of preoperative refraction

From: The European registry of quality outcomes for cataract and refractive surgery (EUREQUO): a database study of trends in volumes, surgical techniques and outcomes of refractive surgery

Type of procedure Indication Mean age at surgery (years) Maximum myopic refraction Mean myopic refraction N
LASIK Myopia 35 −12.0 −3.55 8405
LASEK Myopia 34 −11.75 −3.38 4738
PRK Myopia 34.2 −9.5 −3.2 3693
Phakic IOL AC Myopia 38 −20.0 −8.5 1010
Epi-LASIK Myopia 35.6 −9.5 −3.35 418
RLE Myopia 54.2 −20.0 −5.8 323
    Maximum hyperopic refraction Mean hyperopic refraction  
LASIK Hyperopia 44 +15.00 2.40 1688
RLE Hyperopia 56.5 +13.0 3.4 792
PRK Hyperopia 44.6 +7.25 1.5 308
LASEK Hyperopia 43 +6.50 1.93 273
Phakic IOL AC Hyperopia 33.9 +10.50 5.1 124
Epi-LASIK Hyperopia 38.5 +6.50 1.90 35
  1. LASIK = Laser-assisted in-situ keratomileusis, LASEK = Laser-Assisted Subepithelial Keratectomy, PRK = Photorefractive Keratectomy, Phakic IOL AC = Phakic intra-ocular lens in anterior chamber, Epi-LASIK = Epithelial LASIK, RLE = Refractive Lens Exchange, N = number of procedures.
  2. Refraction in Diopters.