Experts recommend that children have regular eye exams, including color-vision tests, starting between ages 3 and 5.
WSJ: New Outlook for Colorblindness
According to experts the lack of traction has nothing to do with the color but the implementation of the clay -- which has been playing much faster than usually expected on such a surface.
CNN: May 11, 2012 -- Updated 2124 GMT (0524 HKT)
Vision and design experts say the best maps, charts and presentations use words and icons in addition to color.
应用推荐
模块上移
模块下移
不移动