There are many tools available, on- and offline, which show you how a web page or image is seen with a color vision deficiency. These software tools are great and should be used by every web developer.
Eizo went even one step further and introduced this simulations into some of their LCD monitors as a hardware solution. This gives you a realtime transition, which doesn’t need any CPU time and is working even with fast moving movies.
Protanopia and Deuteranopia Simulation in Real Time
Simulates two types of red-green color vision deficiency – protanopia and deuteranopia. The FlexScan S2411W does all the color conversion processing in real time – even moving images. With the bundled UniColor Pro software (Windows Vista/XP/2000 and Mac OS X 10.3.9 or later only) – also developed by EIZO – the designer can instantly switch from a normal viewing mode to the Protanopia and Deuteranopia viewing modes.
It would be nice to see one of those monitors with the color conversion processing in action. Especially a comparison to some good software simulation tools could be very interesting and show if Eizo can really deliver what they promise.