There is a lot of information out there on the internet about brain fog and blurry vision. A lot of it is anecdotal, and there is not a lot of scientific research to support any specific claims. However, there are some theories about how brain fog and blurry vision might be related.
The relationship between brain fog and blurry vision
One possible theory is that when the brain is not functioning as well as it should, it can impact the quality of the images that are sent to the eyes. This could cause blurred vision. Another possibility is that when someone has brain fog, they may not be as focused on their surroundings, which could lead to them not noticing if something in their field of vision changes or blurs.