Pseudotumor Cerebri Support Group
Pseudotumor cerebri (PTC) is a neurological disorder that is characterized by increased intracranial pressure, in the absence of a tumor or other diseases affecting the brain or its lining. Diagnosis requires brain scans and lumbar puncture. Characteristic symptoms are headache, transient visual obscurations or transient visual loss in one or both eyes usually lasting...

When you say you don't believe in chronic fatigue, I'm assuming you mean chronic fatigue syndrome? I do not have that diagnosis, I reference chronic fatigue as a symptom rather than a diagnosis. An unfortunately symptom that exists in thousands of illnesses, ugh. It is my most troubling symptom actually.
Sounds like others have "weird" visual symptoms too, I wouldn't quite describe mine as 3D or Alice in Wonderland but honestly, I don't know how to describe it. My visual issue is constant rather than intermittent so maybe if I had episode of normal vision it would be easier for me to compare and quantify.