WORKING NIGHT SHIFT, EE WAS CHANGING TRACK LINKS ON A BACKHOE, USING A 4"" AIR GRINDER AND A TORCH. HE HAD ON SAFETY GLASSES AND A FULL FACE SHIELD. HE WAS NOT AWARE THAT HE HAD GOTTEN ANYTHING IN HIS EYE UNTIL HE GOT HOME AND HIS EYE WAS BOTHERING HIM. HE WENT TO THE DR AND GOT A PRESCRIPTION FOR EYE DROPS.