I've been through all the eye stuff.
Basically I saw the eye doctor, got all the tests, and everything was fine. I had a long list of issues trust me.
However, he did tell me that everyone's sight is different. He said some will get x, others will get y, although their eye health is completely fine. He also said that these visuals are unexplainable, unfix-able for the most part and it's just differences from person to person.
If we look at a white wall. Some will see 'noise'. Others will says hallows (like Beyonce), others will see shimmers, others will see a fain red or blue colors, others will see imprints and of course, the longer you stare, the more funky things will happen. This is true for most people, but since they don't have anxiety, they don't pay attention.
Your eyes are nerves remember. Do NOT be concerned about eye-site.