Experiencing Brain Fog and Blurry Vision - Seeking Similar Experiences

Hello! I wanted to see if anyone has had similar experiences to me. thank you in advance for the read! Since October of 2021 I've been experiencing this brain fog that makes it really hard to focus on anything. My vision has become blurry as well, making it hard to focus visually on anything either. I got a new glasses prescription and the eye doctor said my vision actually got better! My new glasses don't help the blurry vision, so I think it may be something else. Ever since these things started happening other symptoms have arrived. I tend to get headaches more, mostly triggered by bright lights or a light that flickers the wrong way for my eyes. When I don't get enough sleep the brain fog worsens and I get dissociative. It makes me feel super disconnected from myself and everything around me. I've been diagnosed with ADHD from therapist online. It was a pretty lengthy process but idk I think I would feel better going to someone in person. My plan is to start going to therapy and taking going to the doctors more seriously but I wanted to see if anyone has felt this before as well. Thank you!