Should I sue my work (Wal-Mart)?

Last year at work while unloading a truck, a case of Oxy-clean the cleaning agent came off and I lfted it up over my shoulder not know it was damaged, it went all in my eyes and burned my left cornea. I have fine vision but the last few months have been getting severe headaches and pain behind my eyes. Do I have a case if this continues?.....I am in canada so I dont really know the law here for this type of injury