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 11 months 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 11 months ago
Donut@leminal.space 11 months 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 11 months ago
Neat!
interdimensionalmeme@lemmy.ml 11 months ago
But the iris is a mask, it blocks off axis light
fossilesque@mander.xyz 11 months ago
ceenote@lemmy.world 11 months ago
Plus, no summer day is brighter than a clear winter day with snow on the ground.
Catoblepas@lemmy.blahaj.zone 11 months 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 11 months 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 11 months ago
The pupil dilates, combined with more uv light seasonally, changes the structure of the iris and this it’s color.
turnipjs@lemmy.ml 11 months ago
rhombus@sh.itjust.works 11 months 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 11 months 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 11 months ago
Did you just teal deer a reindeer article?
lemonmelon@lemmy.world 11 months ago
But did you know
That when it snows
My eyes become violet
And light that you shine
Can be seen?MrShankles@reddthat.com 11 months ago
BAAABBAAAYYY! I compare you to a kiss from a deer on the rein
Boxscape@lemmy.sdf.org 11 months 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 11 months ago
Wouldn’t this lead to snowblindness? It gets way brighter in the winter
lowleveldata@programming.dev 11 months ago
They wear sunglasses when it’s too bright, duh
hsdkfr734r@feddit.nl 11 months ago
Looks like brown and purple to me.
plinky@hexbear.net 11 months ago
TFW you don’t have autumn eyes to see blue color 🙏
hsdkfr734r@feddit.nl 11 months ago
Agent641@lemmy.world 11 months ago
Same, bro
Akasazh@feddit.nl 11 months ago
Spreekt the shape of the iris changes drastically too
Collatz_problem@hexbear.net 11 months ago
LISAN AL GAIB!
10_0@lemmy.ml 11 months ago
So that’s where marbles come from!
Cadeillac@lemmy.world 11 months ago
TIL my poop is gold
AsudoxDev@programming.dev 11 months ago
Isn’t that more like dark violet?
affiliate@lemmy.world 11 months ago
damn i wish my eyes did that
Kallioapina@lemmy.dbzer0.com 11 months ago
Blue? That colour is violet in my eyes.
ZILtoid1991@lemmy.world 11 months ago
Fucking Mary Sues…
SatansMaggotyCumFart@lemmy.world 11 months ago
They’re just sniffing that spice melange.
Boxscape@lemmy.sdf.org 11 months ago
Rudolf Al-Gaib!
rockerface@lemm.ee 11 months ago
Source of Nokotan’s powers revealed. The spice must deer
Agent641@lemmy.world 11 months ago
This is how they gain magic flight at Christmas time