[mass noun]colour blindness resulting from insensitivity to green light, causing confusion of greens, reds, and yellows 绿色色盲(指因对绿色光无感觉而造成的色盲,患者常混淆绿色光、红色光和黄色光),第二型色盲。 。 比较 protanopia
语源
early 20th cent.: from deutero- 'second' (the colour green being regarded as the second component of colour vision) + an- + -opia