I HAVE CONSTANT LEFT ORBIT AND EYE PAIN AND OCCASIONAL/MOST

I HAVE CONSTANT LEFT ORBIT AND EYE PAIN AND OCCASIONAL/MOST OF THE TIME) LEFT EYE LID DROOP AFTER A CAR ACCIDENT IN 2013. SOME DAYS MY LEFT EYE LID IS UP, OTHER IT IS OVER MY EYE LASH. OPTHALMOLOGIST SAID TO GO TO A NEUROLOGIST. NEUROLOGIST SAID TO GO TO A NEURO-OPTHALMOLOGIST. i WENT TO A NEURO-OPTHALMOLOGIST AND ALL HE CAN SAY IS "I DON'T KNOW".,BUT HERE ARE SOME EYE DROPS.BEFORE YOU ANSWER=HOW MUCH DOES THIS COST???PS,THEY DIAGNOSED ME WTH TBI, CONCUSSION,WHIPLASH,S/P SLEEP APNEA AND EPILEPSY, ALL FROM THAT INJURY. NOT SURE WHAT TYPE OF DR OR WHO I CAN ASK TO GET ME HELP FOR THIS PAIN. THANKS-HOW MUCH DOES IT COST=1ST???