Effect of Luminance and Contrast Variation on Stereoacuity Measurements Using Smartphone Technology

Table 2

Wilcoxon signed-rank test result between random-dot-based and contour-based measurements in different luminance groups.

Contrast (%)	Group 1 (240 lux)		Group 2 (120 lux)		Group 3 (60 lux)		Group 4 (30 lux)
	Z		Z		Z		Z
95	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
90	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
85	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
80	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
75	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
70	−1.155	0.248	−1.000	0.317	−1.508	0.132	−1.748	0.080
65	−1.155	0.248	−1.633	0.102	−1.508	0.132	−1.748	0.080
60	−1.155	0.248	−1.633	0.102	−1.508	0.132	−1.748	0.080
55	−1.155	0.248	−1.633	0.102	−1.508	0.132	−1.748	0.080
50	−1.155	0.248	−1.633	0.102	−1.604	0.109	−1.780	0.075
45	−1.155	0.248	−1.633	0.102	−1.604	0.109	−1.836	0.066
40	−1.483	0.138	−1.897	0.085	−1.706	0.088	−1.836	0.066
35	−1.589	0.112	−1.897	0.085	−1.897	0.058	−1.906	0.057
30	−1.836	0.066	−1.933	0.053	−2.178	0.029	−3.086	0.002
25	−2.088	0.037	−2.200	0.028	−2.388	0.017	−3.226	0.001
20	−1.995	0.046	−2.390	0.017	−2.688	0.008	−3.138	0.002
15	−2.183	0.029	−2.677	0.007	−3.066	0.002	−3.326	0.001
10	−2.990	0.003	−3.020	0.003	−2.990	0.003	−3.517	<0.001
5	−3.415	0.001	−3.187	0.001	−3.420	0.001	−3.309	0.001