Yep, Steve. Same here: "It lasts about half an hour and consists of a scintillating, multicoloured broken circle of light which has jagged teeth on the inside of the circle. Over time the circle enlarges until it extends to the edges of my visual field, then disappears" See the image on this page. The circle starts as a visual disturbance for me, then enlarges into a half moon shape towards the left or right side, and eventually gets so large that it leaves the "screen" of my vision. This is similar to my visual migraine experience Do a Google image search "scintillating scotoma" for more representations of what other people see. My other eye/brain issue does not relate to Moiré patterns, which do their thing for everyone, including me. It is Scotopic Sensitivity Syndrome. Black print on white backgrounds jump up and down for me, or have grey shadows around all the letters, and close black and white line patterns do little jiggly dances which can be nauseating. I have special coloured lenses in my glasses and use a neutral, darker than usual background on my computer for print.
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