The shape of the iris changes drastically too
this post was submitted on 25 Sep 2024
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Fucking Mary Sues...
Wouldn't this lead to snowblindness? It gets way brighter in the winter
They wear sunglasses when it's too bright, duh
In the polar regions there are extended periods of wintertime where the sun does not rise.
damn i wish my eyes did that
But did you know
That when it snows
My eyes become violet
And light that you shine
Can be seen?
BAAABBAAAYYY! I compare you to a kiss from a deer on the rein
https://www.biorxiv.org/content/10.1101/2024.01.17.576074v1.full.pdf
TL;DR: Eyes with lighter color irises have better low light performance in at least some circumstances.
Did you just teal deer a reindeer article?
LISAN AL GAIB!
Isn't that more like dark violet?
Blue? That colour is violet in my eyes.
TIL my poop is gold
Looks like brown and purple to me.
Edit: TIL. It reminds me of the Moor frog, which turns blue... ish when horny.
Same, bro
TFW you don't have autumn eyes to see blue color π
I don't get it. What do you want to say?
The Internet replied with this:
https://www.mystylebox.ca/pages/eye-patterns-seasonal-color-analysis
Umm... and I'm lost. :)
Tis a joke about color perception :) to me, in the photo the eye does look like oversaturated blue (maybe due to blown out white around the eye)
Tis a joke about color perception :)
OK. I suspected something like this.
to me, in the photo the eye does look like oversaturated blue (maybe due to blown out white around the eye)
Colour perception, different display... who knows. :)
Both images are heavily edited. With different filters. Any assumption about their real colors is moot.
Reindeer's are golden in summer but turn deep blue in winter
Gold and blue?
My dude, those eyes are black and white. π
Theyβre just sniffing that spice melange.
This is how they gain magic flight at Christmas time
Source of Nokotan's powers revealed. The spice must deer
Theyβre just sniffing that spice melange.
This doesn't make sense to me. The iris doesn't collect light for vision. The pupil expands or contracts to vary the amount of light that reaches the retina. Iris color should have nothing to do with it.
A lighter iris color correlates with higher light sensitivity and better low light vision. The higher density of pigment in a darker iris blocks light better.
Plus, no summer day is brighter than a clear winter day with snow on the ground.
Most reindeer live North of the Arctic Circle, where the sun does not rise above the horizon in winter months. I suspect most summer days are brighter than the few hours of twilight the reideer get in December.
It is if you live in a part of the world that is dark for months at a time during the winter, like reindeer do.
The pupil dilates, combined with more uv light seasonally, changes the structure of the iris and thus it's color. (It reflects differently)
From the first source on the linked study, they describe it as the following:
(...) This functions as a mirror providing the second opportunity for photon capture by reflecting light back through the retina, enhancing visual sensitivity.
But the iris is a mask, it blocks off axis light
Neat!