When I carboxymethylcellulose sodium lubricant eye drop my head pressure go away and eyelid irritation also, my problem mild eyelid irritation and I think dry eyelid both eyelid, and behind eye feels like mild tired, and upper head and back head pressure, I have consulted with eye doctor, doctor said my eyes are ok and they gave me carboxymethylcellulose sodium lubricant eye drop, only this drop gave me relief.. What I have to do plz tell me??