Commercially available high-power laser Pointers are designed to ensure safety for everyday use. However, it is also common knowledge that not staring at the light can be dangerous. So how powerful is the laser pointer? The easiest way to kill someone with a laser is to shoot them into your eye. The laser passes through the retina and burns brain tissue. But to do that, you need to focus the laser on a point for a while. So you have to tie the target up or somehow immobilize it. In addition, regular laser Pointers have a protective cover that prevents dangerous infrared radiation, but some don't even do this.
The scary thing about green laser pointer is that you can combine the beams of multiple low-power lasers together to create a powerful beam. However, this is not easy. The power of many laser Pointers must be perfectly focused in the target direction using a lens.
The power and danger of a laser depend on the amount of power (usually in mW) it produces. In the United States, the FOOD and Drug Administration (FDA) mandates that all products have power of 5 mW or less. So most cheap laser Pointers have less than 1mW. Laser Pointers are usually made outside the United States, so they typically don't have the warning stickers required by the FDA. In addition, regular laser Pointers have a protective cover that prevents dangerous infrared radiation, but some don't even do this.