This doesnât make sense to me. The iris doesnât 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.
đ đ
Submitted â¨â¨3⊠â¨days⊠ago⊠by â¨fossilesque@mander.xyz⊠to â¨science_memes@mander.xyzâŠ
https://mander.xyz/pictrs/image/00e30a68-e3eb-4108-ad0f-7ec0d4d2d1ec.jpeg
Comments
officermike@lemmy.world â¨3⊠â¨days⊠ago
Donut@leminal.space â¨3⊠â¨days⊠ago
From the first source on the linked study, they describe it as the following:
(âŚ) 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 â¨3⊠â¨days⊠ago
Neat!
interdimensionalmeme@lemmy.ml â¨2⊠â¨days⊠ago
But the iris is a mask, it blocks off axis light
fossilesque@mander.xyz â¨3⊠â¨days⊠ago
ceenote@lemmy.world â¨3⊠â¨days⊠ago
Plus, no summer day is brighter than a clear winter day with snow on the ground.
Catoblepas@lemmy.blahaj.zone â¨3⊠â¨days⊠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 â¨3⊠â¨days⊠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 â¨3⊠â¨days⊠ago
The pupil dilates, combined with more uv light seasonally, changes the structure of the iris and this itâs color.
turnipjs@lemmy.ml â¨3⊠â¨days⊠ago
rhombus@sh.itjust.works â¨2⊠â¨days⊠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 â¨3⊠â¨days⊠ago
www.biorxiv.org/âŚ/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 â¨3⊠â¨days⊠ago
Did you just teal deer a reindeer article?
lemonmelon@lemmy.world â¨3⊠â¨days⊠ago
But did you know
That when it snows
My eyes become violet
And light that you shine
Can be seen?MrShankles@reddthat.com â¨2⊠â¨days⊠ago
BAAABBAAAYYY! I compare you to a kiss from a deer on the rein
Boxscape@lemmy.sdf.org â¨3⊠â¨days⊠ago
Reindeerâs are golden in summer but turn deep blue in winter
Gold and blue?
My dude, those eyes are clearly black and white. đchicken@lemmy.dbzer0.com â¨3⊠â¨days⊠ago
Wouldnât this lead to snowblindness? It gets way brighter in the winter
lowleveldata@programming.dev â¨2⊠â¨days⊠ago
They wear sunglasses when itâs too bright, duh
ninja@lemmy.world â¨3⊠â¨days⊠ago
In the polar regions there are extended periods of wintertime where the sun does not rise.
hsdkfr734r@feddit.nl â¨3⊠â¨days⊠ago
Looks like brown and purple to me.
plinky@hexbear.net â¨3⊠â¨days⊠ago
TFW you donât have autumn eyes to see blue color đ
hsdkfr734r@feddit.nl â¨3⊠â¨days⊠ago
Agent641@lemmy.world â¨2⊠â¨days⊠ago
Same, bro
Akasazh@feddit.nl â¨2⊠â¨days⊠ago
Spreekt the shape of the iris changes drastically too
Collatz_problem@hexbear.net â¨3⊠â¨days⊠ago
LISAN AL GAIB!
10_0@lemmy.ml â¨3⊠â¨days⊠ago
So thatâs where marbles come from!
Cadeillac@lemmy.world â¨3⊠â¨days⊠ago
TIL my poop is gold
AsudoxDev@programming.dev â¨3⊠â¨days⊠ago
Isnât that more like dark violet?
affiliate@lemmy.world â¨3⊠â¨days⊠ago
damn i wish my eyes did that
Kallioapina@lemmy.dbzer0.com â¨3⊠â¨days⊠ago
Blue? That colour is violet in my eyes.
ZILtoid1991@lemmy.world â¨2⊠â¨days⊠ago
Fucking Mary SuesâŚ
SatansMaggotyCumFart@lemmy.world â¨3⊠â¨days⊠ago
Theyâre just sniffing that spice melange.
Boxscape@lemmy.sdf.org â¨3⊠â¨days⊠ago
Rudolf Al-Gaib!
Agent641@lemmy.world â¨3⊠â¨days⊠ago
This is how they gain magic flight at Christmas time
rockerface@lemm.ee â¨3⊠â¨days⊠ago
Source of Nokotanâs powers revealed. The spice must deer