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

Table 1

Kruskal–Wallis test result of the four groups with different screen luminance.

Contrast (%)	Random-dot-based		Contour-based
	Chi-square	value	Chi-square	value
95	2.626	0.453	0.283	0.963
90	2.626	0.453	0.283	0.963
85	2.626	0.453	0.283	0.963
80	2.626	0.453	0.283	0.963
75	2.626	0.453	0.283	0.963
70	2.626	0.453	0.283	0.963
65	2.044	0.563	0.283	0.963
60	2.044	0.563	0.283	0.963
55	2.044	0.563	0.283	0.963
50	2.255	0.521	0.260	0.967
45	2.261	0.520	0.260	0.967
40	0.888	0.828	0.327	0.955
35	3.244	0.356	0.715	0.870
30	5.709	0.127	1.345	0.718
25	4.192	0.241	0.677	0.879
20	7.472	0.059	1.909	0.591
15	6.670	0.083	2.828	0.419
10	3.775	0.289	0.533	0.912
5	3.000	0.392	0.365	0.947