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Can these affect your vision (long-term) if you stare at them for too long? I feel like many of these images produce similar effects to the McCollough effect. h

Can these affect your vision (long-term) if you stare at them for too long? I feel like many of these images produce similar effects to the McCollough effect. https://en.wikipedia.org/wiki/McCollough_effect https://en.wikipedia.org/wiki/McCollough_effect

joshspankit 3y ago
This is an interesting question and one that we’re possibly just on the leading edge of being able to ask correctly. The answers are likely to be varied and along multiple axis: - Do they affect the muscles of the eye, especially the ones that affect the lens - Do they affect the rods/cones (and do they equally affect people with genetic differences) - Do they affect the way the signals are sent to the brain - Do they affect the visual cortex itself and - Do they affect the brain’s processing of visual input in some way In my personal experience, I’d say we’d need to look at someone for a minimum of 3 years, and ideally 5 or more.
JKCalhoun 3y ago
When I was young (maybe 8 or so?) my mom got me a book of B&W moiré patterns. It consisted of a book of B&W patterns and a clear plastic sheet also with similar patterns. When you overlaid the plastic sheet over the patterns in the book is when you got the moiré patterns. Besides seeing yellows and other fringe colors appear from the moiré, I always wondered if the patterns were linked to ocular migraines I would have for some decades after. (Edit: yeah, this book: https://www.goodreads.com/book/show/2446119.Optical_Designs_in_Motion_with_Moire_Overlays https://www.goodreads.com/book/show/2446119.Optical_Designs_...)
rqtwteye 3y ago
I could imagine that it will change the way you perceive things. There are experiments where people got goggles that switched the left and right eyes and people adjusted after a few days.
- david422 3y ago
  That's pretty wild.
- davchana 3y ago
  Or even simple glasses which turn the view upside down. Human eyes were able to adjust itself (or the image) correct way after few hours.
  - d-lisp 3y ago
    I had a copy of some Merleau-Ponty work in which this experiment was commented, IIRC the experimenter did really think his brain was damaged when the world appeared upside down to him without the glasses.
  - smeej 3y ago
    Don't we all actually go through this as babies? Where our mental image flips? I don't understand why it would make any difference, from an evolutionary perspective, but apparently it does?

joshspankit 3y ago

This is an interesting question and one that we’re possibly just on the leading edge of being able to ask correctly. The answers are likely to be varied and along multiple axis: - Do they affect the muscles of the eye, especially the ones that affect the lens - Do they affect the rods/cones (and do they equally affect people with genetic differences) - Do they affect the way the signals are sent to the brain - Do they affect the visual cortex itself and - Do they affect the brain’s processing of visual input in some way In my personal experience, I’d say we’d need to look at someone for a minimum of 3 years, and ideally 5 or more.

JKCalhoun 3y ago

When I was young (maybe 8 or so?) my mom got me a book of B&W moiré patterns. It consisted of a book of B&W patterns and a clear plastic sheet also with similar patterns. When you overlaid the plastic sheet over the patterns in the book is when you got the moiré patterns. Besides seeing yellows and other fringe colors appear from the moiré, I always wondered if the patterns were linked to ocular migraines I would have for some decades after. (Edit: yeah, this book: https://www.goodreads.com/book/show/2446119.Optical_Designs_in_Motion_with_Moire_Overlays https://www.goodreads.com/book/show/2446119.Optical_Designs_...)

rqtwteye 3y ago

I could imagine that it will change the way you perceive things. There are experiments where people got goggles that switched the left and right eyes and people adjusted after a few days.

david422 3y ago
That's pretty wild.
davchana 3y ago
Or even simple glasses which turn the view upside down. Human eyes were able to adjust itself (or the image) correct way after few hours.
- d-lisp 3y ago
  I had a copy of some Merleau-Ponty work in which this experiment was commented, IIRC the experimenter did really think his brain was damaged when the world appeared upside down to him without the glasses.
- smeej 3y ago
  Don't we all actually go through this as babies? Where our mental image flips? I don't understand why it would make any difference, from an evolutionary perspective, but apparently it does?