Laser Toy And EyesightJohnny Marshall was at his sister's school fair when he saw a laser pen at one of the vendor booths. After some begging and pleading, his parents gave in and bought him the toy. Johnny was playing with his new laser toy at home when he shone it into his eyes out of curiosity — something that many children might do. Within a quarter of a second, he was left with a thermal burn and permanent damage to his retina. The FDA's Center for Devices and Radiological Health states that laser pointers with a 3-5 milliwatt range fall within the federal safety limit. Thus far, there have been no reports of eye damage among those lasers. However, there are plenty of lasers that go well above the federal safety limits, posing a risk for anyone who comes in contact with them. (3) The United Kingdom has a different set of safety limits when it comes to laser pointers. "... If it had been within the UK regulations, it wouldn't have done the damage," said Johnny's mother, Angela Marshall. "But unfortunately, it had been imported, and therefore it was a class 3B laser, which is between 5 and 500 milliwatts." (4) Class 3B lasers with a range of 5-500 milliwatts can cause damage to the eye within a fraction of a second, even from a distance. Serious eye damage can occur from up to 100 meters or about 328 feet away. (5) While Johnny thankfully doesn't experience pain, he lost 75% of his vision. Sadly, he'll be limited to 25% of his sight for the rest of his life.
So if you are using a laser toy or laser pointer, please remember these seven important safety tips: (6)
- Don't use laser pointers without labels - Imported lasers can be far more dangerous because they are higher-powered, and typically have no labels.
- Don't point laser beams at faces or eyes - Laser beams can damage the retinas. Never point a laser beam at anyone's face or eyes. (5)
- Don't point laser pointers at an aircraft - Even a lower-powered laser pointer can travel up to 2.2 miles before fading out. Shining a pointer at an aircraft is extremely hazardous.
- Don't point laser pointers at automobiles - Laser pointers can cause temporary blindness or blind spots. Never point a laser anywhere near vehicles.
- Don't hold a laser beam on skin - A powerful laser pointer can cause a burn if held in place on the skin. Less severe but also important, a laser toy can create a burning sensation on the skin.
- Don't point lasers at animals - It's very easy to accidentally shine the beam into the animal's eyes, so never use a laser beam to "play" with animals.
- Don't give a laser toy to children - Children do not understand the dangers of laser pointers, so it's best to always keep them away from kids.