When my blood glucose goes very low (below 50 mg/dl), I'll often develop an aura in my eyes, kind of like dozens of flashing lights, similar to that experienced by migraine sufferers. The flashing is most intense if hypoglycemia develops when I'm outdoors (in bright daylight) and then move indoors. Conversely, if the hypoglycemia develops when I'm indoors, the aura and other symptoms all go away if I move outdoors. I'm curious to hear from others who have similar experiences. Any ideas why low blood glucose symptoms would go away simply by going out into the brightness outdoors?