Eye wound can happen from the serious light and radiation that a welding circular segment can deliver. Eye wound can happen from hot slag and other metal flotsam and jetsam that can take off from the weld amid cooling, and chipping.
Shield your eyes from welding light by wearing a helmet fitted with a channel shade that is reasonable for the kind of welding you are doing.
Continuously wear safety glasses with side shields or goggles when grinding a work piece if you are not wearing a auto darkening welding helmet.