When the brain sends signals to the tear ducts due to the excessive focus of your eyes on any 8-bit graphics causing your tear ducts to release enough fluid or "
tears" to keep your eyes glossy. Also dilated pupils may be involved. You
will also notice a slight change in your
vision due to the minimal amount of tears shedding on your eyes.
"During gameplay on
tetris for the Nintendo Entertainment
System, my 8-bit
eyes started to appear and it became noticable to others sitting around me."
Note: 8-bit eyes may look similar to anime characters during their glossy eyed moments.