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. 2016 Mar 15;10(2):130–134. doi: 10.1016/j.optom.2015.12.007

Table 2.

Relationship between color vision impairment and characteristics of welders.

Dyschromatopsia
p-value Spearman R
Age 0.426 0.080
Length of employment (year) 0.040 0.205
Average working hours 0.025 0.224