Table 1.

Patient demographics and ophthalmological parameters.

	Total	Women	Men	P value∗
Number of cases	1411	1063	348
Age (y)	50.6 ± 7.6	50.6 ± 7.3	50.6 ± 7.5	0.986
Spherical equivalent (D)	−3.41 ± 3.15	−3.43 ± 3.14	−3.35 ± 3.21	0.654
Astigmatic errors (D)	0.58 ± 0.64	0.57 ± 0.62	0.60 ± 0.71	0.444
Anisometropia (D)	0.58 ± 0.78	0.56 ± 0.70	0.65 ± 0.99	0.100
Near add power (D)	1.56 ± 0.99	1.56 ± 0.99	1.53 ± 0.99	0.713
BUT (s)	3.93 ± 2.06	3.50 ± 2.06	5.45 ± 1.17	<0.001
(% of BUT < 3 mm)	(31.1)	(36.2)	(17.3)	(<0.001)
Corneal staining score	0.27 ± 0.56	0.32 ± 0.60	0.10 ± 0.33	<0.001
Schirmer test value (mm)	11.4 ± 8.8	11.3 ± 8.8	11.9 ± 9.3	0.903
Tear strip meniscometry (mm)	1.67 ± 2.48	1.39 ± 2.12	3.00 ± 3.53	0.014

^∗Women vs. men, unpaired t-test. BUT: tear breakup time.