Mother had surgery to reattach retina after a serious eye infection which was caused by an injection to treat macular degen. After the surgery she has had un bearable headaches in the temple area of the eye that was operated on. She has had to be under heavy pain medication and in re-hab. The surgery was done July 21st and her eye surgeon said the pain was not coming from the eye itself. Could something during surgery cause such headaches? Could the oil they place in the eye cause them? She is 81 and can't stand much more of this pain. Can you help?