Employee was grinding on angle with handheld grinder on Fri 2/6/15. He finished his shift and went home. The next evening (Sat 2/7/15), his eye began to hurt and went to the ER at 2am on Sun 2/8/15. He had piece of metal in right eye. DR removed metal and polished cornea. He said DR suspected the metal could have been in his eye lashes before getting into his eye on Saturday