LASER attack is in the INFRARED SPECTRUM
Can't be seen with the naked eye but can instantly blind you and cause burns. If the people arent blind then yes UV may be more likely, or microwave radiation.
https://m.youtube.com/watch?v=aa_tCzIMJjE&pp=ygUYU3R5cm9weXJvIGluZnJhcmVkIGxhc2Vy