![ishihara ishihara](https://www.tekportal.net/wp-content/uploads/2018/11/ishihara.jpg)
name for the popular type of colorblindness test, 1924, from Japanese ophthalmologist Shinobu Ishihara (1879-1963), who devised it in 1917.
name for the popular type of colorblindness test, 1924, from Japanese ophthalmologist Shinobu Ishihara (1879-1963), who devised it in 1917.