How safe are laser pens sold in street stores?

We know that the laser pen is a great tool for demonstrating, guiding, exploring and so on. It is good when we use it correctly; But when you use it incorrectly, it can cause some damage. The laser pen is not a toy, it has certain danger, use the process to pay attention to.

With the development of economy, the laser pen in the streets of the shop, the shop here in the laser pointer is not normal, mark things are not necessarily accurate, although the price is cheap, quality assurance, but there is no security if you want to use the laser pen, please go to regular laser pen store.

Yesterday morning, the reporter bought two laser pens at a stationary shop down the street for $10 and $15. They told reporters that most of these laser pens were bought by children as toys, and that they were used by teachers as instructions.

After installing a battery pack for one of the laser pens, the store presses the button, which not only gives the beam a more concentrated red glow, but also emits a light violet and transparent light that can be used as a flashlight. "Will this laser pen cause blindness?" Faced with the question, the seller does not take the meaning, only "the Internet says too exaggerated", did not have specific safety prompt.

Press the red button after, the reporter tried to written light emitter side took a look, because the light is too strong, only one or two seconds, eye discomfort, blink of an eye, will also appear in the sight of clouds shadow. After resting for more than 10 seconds, the feeling of discomfort, bloating, and strain of the eye has not been completely eliminated.

What exactly is such a blue violet laser pointer? The reporter bought a laser pen box, the contents of the notes are all in English and Korean. Open the package, in the middle part of the pen, there is a label labeled "danger", "don't look directly" and other English security reminders, and the font size is very small, it is easy to ignore. The other, unwrapped laser pointer, has no other warning, except for the words "ruyi jin".

Reporter in taobao search "laser pointer" again, show "not find relevant baby", but the system automatically by the "laser" matching "laser" goods, there are a number of appearance, function description and laser pointer. The best selling prices of these light bulbs are between a dozen and twenty yuan, with the best business selling more than 5,000 copies a month.

From the buyers comments, many parents will laser as toys to buy for their children: "children playing fondle admiringly, lights a bit dazzling, told the child not as people eyes" "light is very strong, look at the eyes a little pain"... In selling laser, "long distance", "high power" has been focused on selling point, in the description of a commodity, seller declared that their high power laser total range of 19999 meters, after focusing can be seconds that matches, plastic lettering, as long as the discontinuous illuminate eye more than 5 minutes, there is no harm to human body.

Once a burn injury to the yellow spot will accompany a lifetime.

"Macular area of the retina is the most important part of the world and the most sensitive and vulnerable region of the eye. The cone cells can help people identify colors and details, but the cells do not have the ability to regenerate, and cannot be repaired once the damage is done. City four courtyard of doctor of vice director of eye center Xu Heng said, laser pen, especially the large power laser pointer, due to the effect on the light energy per unit area is large, when children looking at its source, macular area is the place where light focusing, just so of visual function damage often associated with life.

Laser pointer as a demonstration with a laser device type laser products, if the laser radiation power is too high, will cause photochemical damage and thermal damage to human body, especially for children was still in the stage of development, if the eyes and skin by laser radiation, can cause serious consequences. As early as in 2014, general administration of quality supervision, inspection and quarantine has released the laser pointer, laser gun for children product quality safety risk warning and consumer tips, made clear that is unfavorable for children to buy laser pointer used as a toy gun. When using a laser pointer, the consumer should also correctly operate the laser pointer to avoid laser exposure to the eyes, skin and clothing.