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It all depends on the intensity and duration. Eyes have an adequate margin of safety, like any biological system. Otherwise, people and other animals would lose their sight on sunny summer days. Not even under the direct sun (but also not in the shade) in natural light much more photons of light come into the eyes than under artificial light. Of course an artificial source can permanently damage the vision, but it is not so simple. The shortwave part of the spectrum is best for this. For example UV (not even direct but reflected) from laboratory sources or welding fits very well. From the red laser the discomfort and reflex closure of the eyelids and the turning away will occur before permanent damage to the organs of vision. Добавить комментарий: |
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