Ishihara test
/ˌɪʃɪˈhɑːrə/noun
- a test for colour blindness in which the subject is asked to distinguish numbers or pathways printed in coloured spots on a background of spots of a different colour or colours石原氏色盲测验。
词源
early 20th cent.: named after Shinobu Ishihara （1879-1963）, Japanese ophthalmologist.