Many possibilites: Fluctuating blur usually indicates a problem with the cornea, the front surface of the eye. There are several possibilities ranging from benign to serious. Any blurred vision warrants an immediate eye exam.
Answered 5/27/2018
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Have it checked: It can be as simple as a need for glasses but it can also be fluctuating blood sugar levels. I would recommend an eye exam as soon as possible.
Answered 4/17/2016
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