Something's wrong

So ive had my green laser for a while now, and ive been noticing this horrid halo around the dot. :gun:



Heres a pic of it without the lens




So whats happening here? Is the infrared diode screwed up? Maybe the crystals are dirty?
is this damage repairable or will it just have to stay?
this kinda worries me and i probably will get a new one since its been a while since ive seen a green laser without the halo :(

Edit: i will also stop using it if this issue is considered a danger