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.
👁 👁
Submitted 1 month ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/00e30a68-e3eb-4108-ad0f-7ec0d4d2d1ec.jpeg
Comments
officermike@lemmy.world 1 month ago
Donut@leminal.space 1 month ago
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.
officermike@lemmy.world 1 month ago
Neat!
interdimensionalmeme@lemmy.ml 1 month ago
But the iris is a mask, it blocks off axis light
ceenote@lemmy.world 1 month ago
Plus, no summer day is brighter than a clear winter day with snow on the ground.
Catoblepas@lemmy.blahaj.zone 1 month ago
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.
Suru@mander.xyz 1 month ago
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.
TachyonTele@lemm.ee 1 month ago
The pupil dilates, combined with more uv light seasonally, changes the structure of the iris and this it’s color.
rhombus@sh.itjust.works 1 month ago
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.
turnipjs@lemmy.ml 1 month ago
www.biorxiv.org/…/2024.01.17.576074v1.full.pdf
TL;DR: Eyes with lighter color irises have better low light performance in at least some circumstances.
GeorgimusPrime@lemmy.world 1 month ago
Did you just teal deer a reindeer article?
lemonmelon@lemmy.world 1 month ago
But did you know
That when it snows
My eyes become violet
And light that you shine
Can be seen?MrShankles@reddthat.com 1 month ago
BAAABBAAAYYY! I compare you to a kiss from a deer on the rein
Boxscape@lemmy.sdf.org 1 month ago
Reindeer’s are golden in summer but turn deep blue in winter
Gold and blue?
My dude, those eyes are clearly black and white. 😏chicken@lemmy.dbzer0.com 1 month ago
Wouldn’t this lead to snowblindness? It gets way brighter in the winter
lowleveldata@programming.dev 1 month ago
They wear sunglasses when it’s too bright, duh
ninja@lemmy.world 1 month ago
In the polar regions there are extended periods of wintertime where the sun does not rise.
hsdkfr734r@feddit.nl 1 month ago
Looks like brown and purple to me.
plinky@hexbear.net 1 month ago
TFW you don’t have autumn eyes to see blue color 🙏
hsdkfr734r@feddit.nl 1 month ago
Agent641@lemmy.world 1 month ago
Same, bro
Akasazh@feddit.nl 1 month ago
Spreekt the shape of the iris changes drastically too
Collatz_problem@hexbear.net 1 month ago
LISAN AL GAIB!
10_0@lemmy.ml 1 month ago
So that’s where marbles come from!
Cadeillac@lemmy.world 1 month ago
TIL my poop is gold
AsudoxDev@programming.dev 1 month ago
Isn’t that more like dark violet?
affiliate@lemmy.world 1 month ago
damn i wish my eyes did that
Kallioapina@lemmy.dbzer0.com 1 month ago
Blue? That colour is violet in my eyes.
ZILtoid1991@lemmy.world 1 month ago
Fucking Mary Sues…
SatansMaggotyCumFart@lemmy.world 1 month ago
They’re just sniffing that spice melange.
Boxscape@lemmy.sdf.org 1 month ago
Rudolf Al-Gaib!
rockerface@lemm.ee 1 month ago
Source of Nokotan’s powers revealed. The spice must deer
Agent641@lemmy.world 1 month ago
This is how they gain magic flight at Christmas time