I get that too every now & then. My doc told me to close one eye when it happens - if the double vision is still there then get it checked out - if not, don't worry about it. Repeat with other eye. Every time it's happened to me & I try the one eye bit - it's gone. FYI, after a couple of right eye, left eye, it goes away within a few seconds.
But, this is my own experience - you might want to get advice from your own dr.
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