Too much caffeine: You may have experienced the results of too much caffeine, brought about by 4 liters of cola. This amount of caffeine can cause a number of neurologic symptoms and may explain the visual problems. If the blurriness recurs, see an ophthalmologist. Refrain from caffeine overdosing in the future as this is a poor choice for malaise and celiac symptoms.
Answered 7/14/2018
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