Answer:
I had double vision for 4 weeks then it improved. now after 5 weeks it seems to be "gone" but will come back later in the day as I use both eyes more. this type of double vision is only when using both eyes, covering one eye gives normal vision but of course restricted due to only one eye being used. a doctor told me if the cause is a TIA (mini-stroke) then usually the double vision will go away. so the short answer is if it is going to go away then maybe 2 weeks or more. there are many causes for double vision so medical care is necessary.