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Message: <blockquote data-quote="Case_" data-source="post: 2686543" data-attributes="member: 549251"><p>Blood sugar level certainly has an effect on vision because it affects the fluid content in the lens and as such affects the ability of the eye to focus properly (hence why you should only get a new prescription for glasses once your blood sugar levels are reasonably stable and controlled, because otherwise you might not get the right corrections), but I've always heard of it (and noticed it) as more of a longer term effect, as in changes over the course of at least a day or more, not as rapid changes within tens of minutes.</p></blockquote><p></p>

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