At home in evening he removed a flake of mica from his R eye. On Sun, 8/10 went to ER & was treated (found nothing in eye) - given antibiotics. 8/11 went to Advanced Eye Care. Was told eye was scratched & was given eye drops. 8/11 reported issue to Pit Mgr. 8/15 went back to Advanced Eye Care for more treatment - did not work, Returned to work 8/18/08 able to see out of eye.