2-Vision quality fluctuation
People may experience having good or bad vision days. One day, we may see things more sharply and clearly than normal, but the next day, that clarity seems gone, and our eyes feel tired and blurry. Such fluctuation is usually caused by sleep deprivation, which reduces your body’s ability to refill tears that keep the surface of the eyes smooth and clear.
However, it can also be a result of diabetes. When blood sugar levels are out of control, the lining of those tiny, vulnerable blood vessels in the eyes can be damaged, leading to changes in vision known as diabetic retinopathy. In fact, a 2014 study that involved more than 100 diabetics suggests that 73% of the participants experienced diabetic retinopathy.
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