Leviathyn | Its hard to say exactly when, but one day, a concept artist woke up one morning and said, “I’m going to throw lights on this character.” Not because his subject lacked the ability to see in the dark, or needed to know where something was situated on his armor. Practicality couldn’t have been the motive of this alteration.
If the author done his research with regards to splinter cell he would soon find out that the goggles did not actually glow, and were simply portrayed that way on screen to provide visual interest and the location of the character in the dark. In chaos theory the goggles would not glow in front of any present mirror.