ColorVision Advanced is the newest and upgraded version of ColorVision.
This is what a colordefiant person needs - check it out for a period of 14 days and see if it wrong..
The surround environment should be rather stable with the light which means that the sunligth will have an effect of the result and experience of ColorVision Advanced.
Colordefiant people can already use the feature of ColorVision and ColorVision Pro but problems arise when we have to look at graphs and relate them to eachother for analysis. This ColorVision Advanced can help you solve that problem.
Just point the center of the screen to the color that you want to focus on and cklick the phones menu button and ColorVision Advanced will do the focussing for you.