I know it’s frowned upon to talk about Phelp here, but there was a young man that recently recovered from neurological symptoms, primarily visual (I’m just like you Turn, mainly plagued with neuro symptoms - fishbowl feeling, head pressure, eye focus issues, etc) through bacopa, which impacts GABA receptors. It’s the most scientific explanation you will find and he actually had his CSF tested. You will be impressed with his post if you read it. But anyways CD seems to be right that the visual stuff is all GABA related. Anyways felt obligated to share in case it helps you in any way.