EMPLOYEE WAS WELDING ON A SCREEN USING SCALER TO CLEAN SLAG AND WELD. HE HAD SAFETY GLASSES ON AND WAS PREPARING WELD AREA. A PIECE OF MATERIAL WAS BLOWN IN BEHIND HIS GLASSES BY THE WIND. HE WENT TO EYE AREA, BRUSHED IT AWAY, THOUGHT IT WAS GONE. THE NEXT EVENING HIS EYE STARTED TO BECOME IRRITATED. WENT TO DOCTOR AND PRESCRIPTION WAS GIVEN.