Take care not to make laser beams enter your eyes under any circumstances.
For observing laser beams, always use safety goggles that block laser beams.
The use of IR scopes, IR cameras and fluorescent plates is also recommended for monitoring laser beams safely.

Be sure to observe the safety standards for lasers prescribed by IEC60825-1 and JIS Standard C6802 (Emission Safety Standards for Laser Products).

Warning labels such as the following are noted in the data sheets.
See JIS Standard C6802 for details.