Outdoor Sports Site

I am a protanope, so I see red as very dark (probably like you see brown), and I can only tell red, orange, and yellow apart due to the brightness of them, not the hue.

Apart from annoying things like having to assume a stoplight is red because I dont see it lit up (and yea I stop at mostly every stoplight that is out) and not knowing if the light is green or yellow...

I really wanna know why I can't see a red laser pointer on a white board. Its not that I don't see red, cause I Definitely do..
Please tell me why laser pointers completely invisible to me??

Being colorblind has never bothered me.. until now, when I can't see a professor pointing to diagram and explaining what he/she is pointing at...