@variablepulserate You could be right - our brains compensate for a lot of eye shortcomings anyway and there is an argument that wearing corrective glasses stops the eyes from working as hard and the brain from interpreting the “wrong” information and making it correct. Let’s face it, the eyes see upside down anyway, which the brain corrects for. I’m sure there’s a point beyond which things aren’t possible, though. My brother was so shortsighted he simply couldn’t see a ball until it was right in front of his eyes. No brain can really correct for something it simply can’t see at all. I don’t think you can compensate for presbyopia, either. Strong light helps a bit, as I found. Even with reading lenses I still need stronger light to read small print nowadays. That's why I use a Kindle so much - variable front illumination and adjustable text size. Some paperbacks I need a torch for, in addition to my specs - but that tends to happen to everyone in time.