this post was submitted on 13 Apr 2025
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Today I Learned (TIL)

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If I close one eye for a few minutes and then switch which eye is closed I see a very (very) subtle difference in hue.

Left eye sees a green tint; right eye sees a pink tint. It's more obvious when I'm looking at a white wall on a bright day.

I don't get this effect if I don't let one of my eyes adapt to the dark first.

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[–] [email protected] 10 points 3 days ago (3 children)

I only recently remembered this was a thing and that it might not be common until I searched.. there are others!

[–] [email protected] 4 points 3 days ago

I just figured everyone's eyes were like that

[–] [email protected] 3 points 3 days ago

I've got this too, and it makes the 3D effects of VR profoundly more deep -- try virtual reality if you have this!

Also, you'll probably be motion sick.. if you get over it, you get insanely detailed 3D environments with this oddity