Study Finds That All Blue-Eyed People Share a Common Ancestor

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[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (4 children)

sensitive to light and also insensitive to light.

I think the bad night vision is from being too sensitive. I see halos, and other driver's lights are blinding.

Could just be eye problems too. Never heard of anyone else who couldn't see in the morning.

[–]Canbot[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (3 children)

People who wear glasses always have that complaint. I have great night vision and love driving at night. Everything is lit up and sharp.

[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

I rly don't think the color of your eye affects your vision or sensitivity.. vision is taken in as light by your iris (and your Iris automatically adjusts for light - when you go out into the light it becomes a pin, when you enter a dark room it dilates), which the back of your brain (the occipital lobe), uses as "3D renders" to form an image.

I have many different eye colors in my family, only one other besides me is blue because I believe brown is the dominant phenotype.

But I'm the only person in my family with 20/20 vision since childhood lol.

please correct me if I'm wrong lol

[–]Canbot[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (1 child)

I agree that the iris shouldn't affect sensitivity but that effect has been measured (I believe). The explanation I have heard is that pigments in other layers of the eye have an effect, but I don't know exactly what that refers to. I also think it is possible for there to be a secondary effect to the eye from either the same gene modification or a second gene that usually accompanies the blue eye gene. But that is speculation.

Or the whole thing could be measuring error, or bullshit. But without a competing study to show that I'm going to say the original study is most likely true.

[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Thx for the explanation, I didn't even think of it like that!

I have heard that pigments in other layers of the eye have an effect, but I don't know exactly what that refers to.

I think I get it, and that actually does make sense in terms of the whole eye color and sight thing.. if you think about the eye in terms of the color of a t-shirt for example, black shirts will absorb more light and store more energy so they get hotter, whereas white shirts reflect the light and are cooler.

So if you put that thinking in context with this eye thing, it would make sense for the color around the iris to be dark, to direct more light into it.

The only thing I find confusing (which could be bs & mean nothing), is my personal experience, where like I said, I am one of two in my family with blue eyes, most have brown and then green. I'm literally the only one with 20/20 vision since childhood, and multiple family members wear glasses.

If the dark brown color attracts and helps direct light into the iris, shouldn't brown-colored eyes always win over blue? It has to be a genetic or possible secondary effect from the mutation that isn't accounted for like you said.