Concentration of Zinc, Copper, Selenium, Manganese, and Cu/Zn Ratio in Hair of Children and Adolescents with Myopia

Table 5

The influence of sex for serum trace elements concentration and Cu/Zn ratio in control and myopic patients groups.

	Min; med; max	Min; med; max
Control group	Females ()	Males ()
Zn (µg/g)	4.91; 136; 326	15.3; 118; 588	0.78
Cu (µg/g)	3.1; 8.28; 18	2.95; 9.49; 21.9	0.63
Se (ng/g)	32.2; 334; 1030	155; 487; 824	0.28
Mn (ng/g)	37.8; 299; 3360	44.9; 281; 6240	0.44
Cu/Zn ratio	0.02; 0.07; 1.82	0.01; 0.07; 0.5	0.82
Myopic patients	Females ()	Males ()
Zn (µg/g)	137; 307; 1240	98; 186; 361	<0.001
Cu (µg/g)	0.34; 13.2; 664	1.72; 9.12; 158	0.2
Se (ng/g)	34.7; 285; 5060	22.6; 495; 2550	0.008
Mn (ng/g)	107; 471; 4710	150; 402; 5610	0.22
Cu/Zn ratio	0.01; 0.04; 0.70	0.01; 0.05; 0.82	0.36

^aP value for Mann–Whitney U test. Statistically significant differences at 0.01 significance level.