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http://www.kitlaser.com/safety-class-3b-classification.html
Green laser pointer astronomy.What type of laser pointer can hurt your eyes? Reporters have three bright laser flashlight price of the injured three people who are injured after a very large difference in contact. In late April, the first wounded came to the popular city hospital, the doctor found that the examination of the macular parts of the eye, resulting in blurred vision damage, visual center of the shadow, deformation. When asked what kind of damage caused by the laser pointer, the patient said that the ordinary few hundred dollars of the laser pointer, you can illuminate a variety of models. Last week, in the second injury, the purchase of 90 yuan laser pen came to the hospital's public eye, was diagnosed with macular edema. The day before the injured third came to the hospital, and then he was injured thousands of laser pens, because inadvertently directly watched the mirror reflex 100MW laser burn the eyes, even if the vision is good, but the visual defects, three days feeling no recovery.
http://www.kitlaser.com/what-is-the-real-purpose-of-the-laser-pen.html
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