6. Watch Out!! Lasers can also be dangerous if it improperly use. The greatest danger is from beams projected into the eye such as retinal and cornea burns. High-power laser light can also cause skin hazards such as burns when there is a lot of energy directed onto the human body. Mostly in the concert or stages, laser lighting professionals will move the beam above the heads of the viewer because if any happens it is their responsibility to make sure that the audiences are safe from that zone. It is also the audience responsibility to watch the sign and beware of this safety information.