There’s a reason you need to wear snow goggles when you’re skiing or snowboarding. It’s to protect your eyes from over-exposure to sunlight when reflected from snow. This invention didn’t come out of nowhere, it dates back to the Native Americans. But their goggles looked a bit different from modern-day ones. The Inuit used bone, leather, wood, and antlers to build their goggles. Then, they’d put a slit into the goggles to limit the amount of ultraviolet light that got into their eyes. It turns out the slits would also help them with their vision, since the slits narrowed the light and made objects in the distance appear sharper than they normally were (Polar Journal).