[thawkins]

I would advise getting your blood sugar levels checked, high blood sugar has a negative effect on eyesight, and given that during pandemic many people have cut exercise and may have started snacking more. There is a strong correlation between type 2 diabetes and vision problems.

[ASalazarMX]

This is sound advice, our ophthalmologist said the same: glucose level can change the thickness of your cornea (https://pubmed.ncbi.nlm.nih.gov/17964654/), and that can even improve your vision. A sudden change in vision, for the worse or better, merits checking your glucose level.