Surprised someone took the bait but, ehhAs to countermeasures, it depends upon the particular weapon you are talking about.
Blinding laser weapons have been banned by 108 nations as of 2018 see: https://en.wikipedia.org/wiki/Protocol_on_Blinding_Laser_Weapons
Laser pointers are not laser weapons/weaponized lasers in general.
Good laser safety goggles/glasses are a must for safe use/protection of eyes and eyesight.
See Eagle Pair goggles /glasses here: https://www.survivallaser.com/safety_goggles/cat556089_826120.aspx