I Have Been Experiencing What I Would Call Double Vision,

I have been experiencing what I would call double vision, or sort of the same as when you cross your eyes, for two years. In addition at times , I get very dizzy , room spinning but I t stops if I sit down quickly , I am 53 years old male . Great health , some vein problems from standing hairstylist 30 years. 5'11 , 195 lbs. work out 5 times a week. Not sure what I should do?