Anyone who has boarded before knows the value of a good pair of snowboard goggles - they are so much more than a fashion accessory.
In bright sunlight, goggles will protect your retinas from above and below; don’t forget that the light bouncing back from the snow can be amplified and therefore more harmful. Normal sunglasses can’t protect you against this. When the conditions are gloomy, the lenses can help add texture to the ground and eliminate "flat light" which means you can see the moguls and dips and avoid last minute adjustments.