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Comment by soxocx | Hacker News Reader

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soxocx·

Thats interesting. I see it with either or both eyes.

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I... only see it happening with either both eyes or my right eye...

My left eye is immune? This is uncanny...

Sounds like your perception can't exactly be pigeonholed.

Boom, baby.

your taxi to the nearest wormhole awaits..

I’m the opposite! My right eye alone can’t see it, but can do with both or left only!

The illusion is much less if I zoom in and even less if I close one eye, so maybe they had their device up close to their face?

You are right. If I tilt the screen while changing distance to the screen and keep blinking with my eyes while I do this, I, besides looking like a maniac, can weaken the effect and even make it disappear entirely.

Try closing one eye and tilting your head 90°

I can see it irrespective of how many eyes are open or any tilt angle.

So you can see it with zero eyes open? ;)

I also see it with any number (>= 1) of eyes open and at any angle. Wonder if GP's phone was on night shift or something similar - the article mentions that color changes impact the illusion's visibility.

No night shift, for what it’s worth. Another commenter mentioned astigmatism, which I do have. I was not wearing my glasses at the time.

Curious to see if anybody with expertise on the topic of optics or visual perception chimes in with some insight.

Interesting, I have astigmatism so I tried it without my glasses and with both one and two eyes open at different angles and I still see the illusion (with no change in intensity of the “bobbing”)

Can you see it with three eyes opened?

I can’t but I’ll ask my yoga guru tomorrow.

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