Does invisible laser hurt your eyes?
Yes. Usually invisible laser including 808nm, 980nm diode laser, and 1064nm ND: YAG laser, they are even more dangerous than visible laser, and should be more careful while working with it.
Does low power green laser pointer hurt your eyes?
Yes. We mean low power green laser pointer usually is 5mw to 20mw. This is enough to hurt eyes if don't use it in right way. It is prohibited to see the laser beam on the wall, and 100% prohibited to shoot eyes by this kind laser pointers.
Can sunglasses be used instead of laser safety glasses?
No, The filter of laser safety glasses has special absorber component to reduce the laser energy in geometry times. Common sunglasses even cannot block any laser at all because of the characters of the laser of high concentration in space and time.