Description
Accepted By Leading Authorities As A Simple And Accurate Method For Discovering Congenital Color Blindness And Red-green Blindness Each In Two Forms Complete And Incomplete * Includes Four Special Plates For Tests To Determine The Kind And Degree Of Defect In Color Vision * Makes Use Of The Peculiarity That In Red-green Blindness Blue And Yellow Appear Remarkably Bright Compared With Red And Green * Color Plates Encased In Specially Designed Album-type Books For Ease Of Handling * Detailed Instructions Included
Reviews
There are no reviews yet.