Photoshop CS4 for Color Blindness

Photoshop CS4 has a new proof color. This is specially for color blindness people. The most often to occur, color blindness are Protanopia and Deuteronopia. Protanopia is unable to see green color, while Deuteronopia is unable to see red color. To use this new feature in Photoshop CS4, simply select View > Proof Setup > ..