blue laser pointer high power
Click to block a category:GamingPoliticsNewsComicsAnimeOther
10-year-old boy Binbin Hangzhou, Hill went with the family to play. At nightfall, guided by a high-power laser pointer dangling for tourists "pointing country", the light passing Binbin left eye, it then twelve seconds of effort, Binbin's eyes were "burned" the. After half a month, bubbles disappear, for the shadows to make trouble, what to see things in the middle are missing one. Eye Hospital of Wenzhou Medical College Hospital District, Hangzhou physician Offered chess, check out Binbin eyes. Findings: retinal damage, macular area discontinuity. The macula is the most abundant eye to gather information, the most sensitive areas, people should see the light of things, there must be such a healthy macula. Although only a small part of the retina, macular bear but over 90% of the visual function, where the bad, means difficult to restore vision. Binbin doctor prescribed some eye drops, used to protect the retina, but the shadows will disappear not to say. "If the damage in the superficial, and certainly can be restored; But if retinal damage is irreversible, and also means that it is difficult to restore vision." Dr. Chen skim the page a bit, which refers to the star power of the pen, with the class when instead of "pointer" laser pointer is not the same, a great power, a low 100 mW, high energy up to 500 mW. Class of ordinary laser pointer will not cause damage to the eyes, but not direct sunlight. Laser output power is only less than 0.4 mW, it will not cause damage. He speculated that the laser pointer "burn" the eyes of the principle, with the laser treatment similar. Dr Chan told reporters that the current clinical treatment for medical treatment of retinal laser power of 80 mW or more generally, if the case in close proximity to the eye, the laser beam will leave marks in the fundus. "But the treatment, the laser beam is flashing every use, not persistent; And never touch the macular area." Dr. Chen stressed. Reporters followed Taobao enter "laser pointer" search, there has been more than 30,000 hits a result, many products on the banner can also "lit match", "lighting a cigarette" and other propaganda. Where a product page, the seller also "intimate" to upload some point validation matches the video, a green laser columns new to match head, immediately lit up.
Tags: blue laser point