Here's my experience with FE:
The night before my flight back to Taiwan I was in a seafood resterant with my family in Bangkok, eating seafood. I don't know it is the seafood itself or the fact that I haven't eaten them in quite a while. Allergies started kicking in. My eyes got itchy and swollen so much that I rushed to the hospital to get a shoot and some medication. During waiting for my cues for the doctor, I close my eyes and started FE. I start to notice the itches and the pain around my eye and slimply accept it. Somehow I felt some sort of energy was filling into the allergic area, which were my eyes. For a brief moment, I felt better. I don't know if it is whether I didn't concentrate enough or what. This comfortable sensation only last for a while and then it went back to the good old painful state again.