I had a failed root canal and then root extraction upper left 6th. But after that pain started in the neighbouring tooth upper left 5th. At the same time I got dry eye syndrome and was feeling pain in left eye. I waited for tooth pain to go away on its own and for eyes consulted 3 to 4 doctors each recommending tear drops like refresh tears. Now after almost 2 years the pain in left eye is still there. Also there remains pain on the back left side of head. After 2 years not one doctor advised me rct to the hurting upper left 5th tooth however there was no cavity or pus etc. The pain in the tooth went away but I am still feeling pain somewhere around the same tooth and the left eye and left side of my head back side. The tear drops are worsening the pain in the left eye. Also to mention that I am getting relief from pain in eyes teeth and head by pain killers and after taking 5 to 6 antibiotic tablets like levofloxacin or amoxyllin etc. I am confused what to do and whom to consult.