Read the information from the US Food and Drug Administration website about laser beams.When operated unsafely, or without certain controls, the highly concentrated light from lasers—even those in toys—can be dangerous, causing serious eye injuries and even blindness. A beam shone directly into a person’s eye can instantly cause damage, especially if the laser is a powerful one. Moreover, eye injuries caused by laser light often do not cause immediate pain. Vision can deteriorate slowly and, therefore, may go unnoticed for days.
Answer
A
People can be blinded by laser beams, especially if the beam bounces off different surfaces.
B
A laser beam shone directly into an eye can immediately damage a person's vision without significant pain.
C
A person who uses a laser light in an unsafe way will damage their eyes as well as the vision of others.
D
Toy manufacturers should not include lasers in their products because laser beams are dangerous.