Evolution of Color Vision Tests

Occupational color vision standards: new prospects

“…How- 45 ever, color vision assessment with the Holmgren wool test 46 was introduced for railway employees and recruits for the 47 armed services. This test involved selecting matching shades 48 of wool and was similar to others used in the textile industry 49 [5]. Poor consistency was exposed in the successful legal ap- expected in the absence of YB loss or acquired deficiency.…”