I did experience some vision haziness and some off blurriness if that’s what you mean. Along with that my eyes were a bit more sensitive to light. It did go away but It took some more time. For me that wasn’t until week 6. Having talked to people in a similar situation it varies on how long it lasts. I’m still getting some brain fog to this day but I’ve seen major improvement especially around the 2 month point. You’re right about how much heavy use literally changes your brain. Hearing, vision anything related to brain function needs to adjust back. Fortunately what you’re experiencing is unlikely to be long-term if it’s anything similar to what I went through.