Danger from cheap green laser pointers

[pi3142]

Cheap green laser pointers may be emitting infrared laser which is dangerous  as it is invisible. You may be staring at the invisible infrared laser till your eyes are damaged without you noticing it. This is especially so when the mechanism of the green laser pointer is damaged and emits only invisible infrared laser only.

https://www.youtube.com/watch?v=iR1Ku5dnbH8