Twelve-Year Follow-Up of Laser In Situ Keratomileusis for Moderate to High Myopia

Table 1

Preoperative demographics of the study population undergoing conventional laser in situ keratomileusis (LASIK).

Characteristic	Mean ± standard deviation
Age (years)	34.4 ± 9.5 years (range, 23 to 58 years)
Gender (% female)	63.2%
Manifest spherical equivalent (D)	−6.70 ± 2.52 D (range, −3.00 to −12.75 D)
Manifest cylinder (D)	0.76 ± 0.67 D (range, 0.00 to 3.00 D)
LogMAR UDVA	1.32 ± 0.22 (range, 0.82 to 2.00)
LogMAR CDVA	−0.10 ± 0.05 (range, −0.18 to 0.00)
Mean keratometric readings (D)	43.6 ± 1.3 D (range, 40.5 to 47.4 D)
Central cornea thickness (μm)	545.4 ± 30.6 μm (range, 479 to 612 μm)
Intraocular pressure (mmHg)	15.0 ± 2.3 mmHg (range, 9 to 20 mmHg)
Endothelial cell density (cells/mm^2)	2725 ± 265 cells/mm^2 (range, 1990 to 3246 cells/mm^2)

D = diopter, LogMAR = logarithm of the minimal angle of resolution, UDVA = uncorrected distance visual acuity, and CDVA = corrected distance visual acuity.