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Table 1 Preoperative demographics of the study population

From: Effect of corneal cross-linking on endothelial cell density and morphology in the peripheral cornea

DemographicMean ± standard deviation (range)
Age (years)26.2 ± 8.6 (20 to 47)
Gender (% female)61
Spherical equivalent refraction (D)−4.52 ± 4.28 (1.00 to −13.50)
Manifest cylinder (D)− 4.19 ± 3.79 (0.00 to − 11.00)
UDVA (logMAR)0.25 ± 0.27 (0.7 to − 0.08)
Mean keratometric readings (D)49.8 ± 3.2 (44.2 to 55.3)
Central cornea thickness (μm)478.1 ± 51.1 (400 to 581)
Stage of keratoconus (eyes) 
Stage I8
Stage II18
Stage III5
  1. D Diopter, LogMAR Logarithm of the minimal angle of resolution, CDVA Corrected distance visual acuity