Impact protection is probably a good idea when you're doing any sort of mechanical work... though most people don't seem to care that much. Even the simplest pair of glasses will offer a lot of protection though. I used to work in chemistry where goggles against chemical spats or exploding glass labware were mandatory, but wearing your own 'normal' glasses was also accepted.
That said, i guess we should recommend goggles for soldering work as well.. getting a spat of molten tin in your eye is very painful... never happened to me, but i've seen it happen, and the treatment involves scooping the blob of lead out at the hospital.