A comprehensive resource for safe and responsible laser use
In the first case, the macular area of a boy’s eyes were damaged so that he could not see an object at 10 cm. The damage was confirmed by retinal examination.
In the second case, a 15-year-old high school student also has burns on his macular area, from when a classmate aimed a laser pen at him. He could only see objects within 50 cm, and there were scars consistent with those left by clinical lasers.
Both cases were reported by Xie Airui, an eye specialist at the Ineye Hospital of Chengdu University of Traditional Chinese Medicine. Both cases occurred between September 2017 and May 2018.
According to a May 31 2018 news story, laser pens have become popular with some schoolchildren in Chengdu. Many stationery shops sell them for prices between USD $0.80 and $31.00. in 2014 the General Administration of Quality Supervision, Inspection and Quarantine warned consumers about laser pointer hazards. “But no market supervisors have taken up the matter in a serious way, according to Xu Bin, a lawyer in Chengdu.”
From China Daily via Ecns.cn
This photo shows a red light coming from the audience area, aimed towards the stage.
“Internet photo” from Want China Times showing Chinese Premier Li Keqiang, with green laser light on his face.
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The South Korean embassy in Beijing issued a statement saying “It’s extremely improper and regrettable to shine a laser pointer on state leader. This should not have happened.”
According to the statement, the embassy was investigating in order to “confirm facts.”
The man was caught by police, who said he would be held in custody five days.
From the Business Standard
Condoleeza Rice, Secretary of State at the time, sent the cable to the U.S. Embassy in Beijing. Rice said that China’s actions were “provocative and inconsistent” with the law of the sea” and “constitute serious harassment and elevate the risk of miscalculation.”
Washington Times reporter Bill Gertz, who broke the story, was unable to find out whether the light was a laser or a high-powered searchlight. Gertz also pointed to parallels with the 1997 suspected laser use by the Russian merchant ship Kapitan Man.
From the Washington Times
Analysis: Based on the color, LaserPointerSafety.com believes it is a conventional light. To produce a white light beam with lasers requires superimposition of three or more single-color lasers. This is more difficult than using a single-color laser, and would not provide any significant benefit in a situation such as the ship attack. (If countermeasure anti-laser goggles are being used, then it may be beneficial to use multiple wavelengths. It is more difficult to defend against multiple wavelengths, and doing so would reduce conventional visibility since red, green and blue light would all be blocked. Even here, balancing the wavelengths to produce a “white” light is not necessary.)