Experiencing periodic horizontal binocular diplopia with exertion (always), coffee (sometimes), alcohol (always), stress (sometimes). As the distance to the object increases, the doubled images
are further apart. Eyes sometimes feel sluggish. Occasional headache. If I sit down and cool off forehead and eye area with something cold like ice, the problem is resolved within a few minutes. Visited regular doctor, ophthalmologist, and neuro- ophthalmologist.