Kohl's Safety and Injury Prevention Program. Street Smarts. Street Smarts In the Community. Pediatric Injury Prevention Scholars Program. Barbecuing with Kids. Safety tips. Bicycle Helmets: Getting the Right Fit. Bike Helmets: Finding the Right Fit. Bounce Houses: Risk of Injury for Kids.
Dangers of Energy Drinks for Kids. Fireworks Safety: Tips for Parents. First Aid for Parents. Hazards of Leaving a Child in a Hot Car. Hiking Safety for Kids: Expert Tips.
How to Avoid Trouble in Toyland. How to Safely Use a Baby Monitor. Introducing the Safety Corner in the Family Pantry. Is Your Purse Hazard-Free? It's Baby Safety Month: Should you use rear-face car seats? Laundry Pod Poison Danger. Lead in Your Child's Candy. Preparing Your Family for a Disaster. Prevent a Head Injury When it comes to light, the retina is the key player.
When light hits our eyeball, it activates the cone and rod cells within our retina which then triggers an exchange between the eye and the brain to interpret the incoming light into what we see in front of us via Live Science. Because our eyes have the keen ability to pick up on light, we must be careful not to damage these sensitive cells when dealing with bright light sources.
Laser pointers, popular toys used to entertain our furry feline friends, are light sources that pose a risk to our eyesight. According to doctors at Patty Vision Centers , should you shine a laser pointer into your eye, the most common effect you'll experience is "flash blindness," or a momentary loss of vision from disorientation.
In FDA-regulated pointers, the laser power limit is set at one-tenth the actual threshold of damage. If a person sees a bright light, they will automatically blink, on the average in less than 0. This is referred to as the blink reflex, and it is considered when the limit is assigned for how much power will cause an eye injury. By the way, you shouldn't force a stare at a laser, just like you shouldn't stare at the sun or any bright light source.
Possible more potentially damaging -- although not to the eye -- is that a regular pointer laser can overwhelm the eye with light, typically called flash blindness.
If a person is walking a rocky path, operating machinery, a vehicle or aircraft, this temporary loss of vision could cause injury or disaster. At night, when the pupil is most open, the effects would bemagnified. Some basic rules with lasers: Never direct a beam onto another person, especially their face.
Do not shine it onto a mirror or mirror-like surface. Do not look at the beam through binoculars or a microscope. One last thing -- some government entities have banned or restricted laser pointers. Some states and some cities have or have proposed age limits on the purchase or use of pointers.
The United Kingdom bans the use of class 3A pointers. Laser pointers are high-tech tools, not toys. Newsletter Get smart. Sign up for our email newsletter. Already a subscriber? Sign in. Thanks for reading Scientific American. Create your free account or Sign in to continue. See Subscription Options. Go Paperless with Digital.
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