I wonder if masks contributed to this at all. When we started wearing them I got gnarly headaches which went away after taking them off, maybe it was rebreathin

I wonder if masks contributed to this at all. When we started wearing them I got gnarly headaches which went away after taking them off, maybe it was rebreathing, though, and not postoptical. My distance vision also deteriorated noticeably but I'd say my habits remained largely consistent.