Quote:
Originally Posted by meeera
Have you had a recent diabetes test? A primary feature of a hangover is hypoglycaemia. Swings in blood sugar can cause the lens to swell and shrink, even in the short term. I'd get a full eye checkup and a full general medical.
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It sounds to me more like changes in pupil diameter. In bright light the pupil is small, and the depth of field is greater (and so close vision improves). In low light, the opposite is true.