f lux واقي العينين

OS X PPC users can use the old version: F.lux v11. (also, disallow updates!)

Mac users with location errors on reboot should try the beta version: F.lux v15.

 

f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.

Tell f.lux what kind of lighting you have, and where you live. Then forget about it. F.lux will do the rest, automatically.