The Majima's Classification for Social Adaptability in Color Vision Defective.

Defective color vision and its inheritance.

We owe the first accurate description of color blindness to the chemist John Dalton, who in 1798 characterized his own condition in the words 'persons in general distinguish six kinds of colour in the solar image; namely, red, orange, yellow, green, blue, and purple.... To me it is quite otherwise:-I see only two, or at most three, distinctions. These I should call yellow and blue; or yellow, b...

Diagnostic Tests of Color Defective Vision

The genetics of normal and defective color vision

The contributions of genetics research to the science of normal and defective color vision over the previous few decades are reviewed emphasizing the developments in the 25years since the last anniversary issue of Vision Research. Understanding of the biology underlying color vision has been vaulted forward through the application of the tools of molecular genetics. For all their complexity, th...

Color Information Presentation for Color Vision Defective by Using a Projector Camera System

There are individual differences in color vision. It is difficult for a person with defective cones in the retina to recognize the difference of specific colors. We propose a presentation method of color information by using a projector camera system. The system projects border lines or color names on real object surfaces when they have specific color combinations. Effectiveness of the proposed...

Flicker photometry with chromatic adaptation and defective color vision.

When we alternate red and green stimuli at a certain frequency, we observe a flicker­ ing field. By adjusting luminances of both stimuli, we can minimize the flicker percep­ tion. This is the principle of the flicker pho­ tometry. When we apply the method to color defects, both subjects who are protanomal and those who are protanopic show a defi­ nitely different adjustment of two lumi­ nances ...