How to keep vision in front of the screen.

..Style.
First: a properly configured monitor\TV.Brightness ,contrast ,backlight,dynamic contrast.Second: place.Monitor or TV must be at an optimum distance so as not cut the eyes and make it all visible.And third:Go and have a walk,alone another night without a computer ,nerd would be better than all the recommendations.

the higher the blink rate, the less strain on the eyes. and better to have a screen with normal color where the white color without blue tint