- Laser pointers used to exercise pets may seem like safe and simple low-powered devices, but an Ohio teen learned the hard way that staring at the narrow beam can cause permanent eye damage. A custom-built high-resolution optical imaging system shows cells in his retina were "blasted away." https://news.osu.edu/pet-laser-pointers-have-enough-power-to-blast-away-cells-in-the-back-of-the-eye/ 51 comments science
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