Chances are there for recurrence of previous infections due to trauma even after root canal treatment. Due to that u might have referred pain at the base of eye ridge. Or it can be re-infection in root canal of same tooth.
Next Steps
It's better if u visit same doctor and ask your all doubts and possibly reasons and treatments for these pain. Or else can visit other doctor of your choice.
Health Tips
Don't delay for check up. U definitely need through diagnosis and treatment. Kindly provide all history of these teeth area in details to your doctor