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The Origins Of Eye Color

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It may not surprise you to know the science behind your eye color isn't quite black and white. In fact, because there is no actual green or blue pigment in your iris, the color of your eyes is constantly changing depending on your age and situational lighting if you're seemingly blue- or green-eyed. Did you know each of your eyes contains more than 107 million light-sensitive cells? That means that we experience color, patterns, depth and much more in unique, individualized ways—and backs up the notion of an ever-changing eye pigment. If you're blue-eyed, however, you're related to all other natural blue-eyed folks, whether they range from dark to light tones. Or maybe you're someone who experiences Heterochromia iridium, which is a rare imbalance of pigment resulting in two different eye colors in the same individual.

So when it comes to eye color, what's the biggest predicting factor? Is it true all babies are born with blue eyes—and if so, why? Whether your eyes are brown, hazel, blue, gray, brown, black or purple, this playlist provides the scientific insight you need to understand the vibrant science behind your windows to the world.

03:44
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What makes eyes brown, blue, green, and so on? Share on Facebook: http://goo.gl/Pfb2NK Share on Twitter: http://goo.gl/3GGFbq Subscribe: http://goo.gl/ZYI7Gt Visit our site: http://www.brainstuffshow.com
02:24
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Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehowbeauty Watch More: http://www.youtube.com/ehowbeauty When using hair color to dictate the color of eye makeup that you use, you're always going to want to remember a few important rules. Find out if hair color dictates eye color with help from a professional makeup artist in this free video clip. Expert: Kendra Richards Bio: Kendra Richards is a professional makeup artist who continues to be inspired by and love the transformation power of makeup and its intimate and creative process. Filmmaker: Colleen Yorke Series Description: You can't just throw on your makeup and expect it to look good - there are always a few important rules you need to follow and a few important things you need to keep in mind. Get makeup advice on a variety of topics with help from a professional makeup artist in this free video series.
04:02
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SciShow explains the genetics -- and physics -- behind why blue eyes are blue, and what the future may be for the trait. Spoiler alert: Blue eyes aren’t really blue! SciShow explains! Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources:
01:46
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The eye sees color through the retina's rods and cones, which receive and respond to different wavelengths that cause a stimulation. Find out how the brain processes this information after it is sent through the optic nerve with help from an optometrist in this free video on optical astigmatisms. Expert: Raj Patel Contact: www.vancouvervision.com Bio: Dr. Raj Patel is an optometrist at Vancouver Vision Center in Vancouver, Wash. Filmmaker: Lisa Fenderson
03:27
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When babies are born, their eyes and hair are one color, but change within the first few years of their life! Why do hair and eye colors change? Trace explains the process of inheriting certain traits from your parents, and discusses why the colors change! Follow DNews on Twitter: http://www.twitter.com/dnews Follow Trace on Twitter: http://www.twitter.com/tracedominguez Read More: How are human eye colors inherited? http://www.athro.com/evo/gen/inherit1.html "Genes are structures that are carried on larger structures called chromosomes. The genes for each characteristic come in pairs, and the two genes together produce a given characteristic." New genes involved in human eye color identified http://www.sciencedaily.com/releases/2010/05/100506172731.htm "Three new genetic loci have been identified with involvement in subtle and quantitative variation of human eye color." Blue-eyed Humans Have A Single, Common Ancestor http://www.sciencedaily.com/releases/2008/01/080130170343.htm "New research shows that people with blue eyes have a single, common ancestor." Why Do Babies' Eyes Start Out Blue, Then Change Color? http://www.livescience.com/13564-babies-eyes-start-blue-change-color.html "While only 1 in 5 Caucasian adults have blue eyes in the United States, most are born blue-eyed." Hair Color http://genetics.thetech.org/ask/ask63 "Why does the hair color of children often change color as they grow older?" Eye Color http://genetics.thetech.org/ask/ask176 "Why did the very blue eyes of a kid become brown when he grew up?" Blue Eyes http://www.webexhibits.org/causesofcolor/14D.html "Just as the cerulean blue of a baby's eyes fades over time, so does the blue sky as it stretches over the horizon - but two different scattering effects are responsible for the changes." How Vision Works http://health.howstuffworks.com/mental-health/human-nature/perception/eye1.htm "Although small in size, the eye is a very complex organ." How Eye Color Develops http://www.allaboutvision.com/conditions/eye-color.htm "The colored part of the eye is called the iris, which has pigmentation that determines our eye color." Baby's Eye Color http://www.whattoexpect.com/first-year/ask-heidi/baby-eye-color.aspx "Get your fill gazing at those baby blues now, Mom, because there's a chance they could become brown (or go green)." Watch More: Are Beards Still Cool? https://www.youtube.com/watch?v=FB1sczLwrmk TestTube Wild Card http://testtube.com/dnews/dnews-231-how-too-many-screens-affect-our-brain?utm_source=YT&utm_medium=DNews&utm_campaign=DNWC Don't Leave In Your Contact Lenses! https://www.youtube.com/watch?v=ZOmsFH6yiiM ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Tara Long on Twitter https://twitter.com/TaraLongest Laci Green on Twitter http://twitter.com/gogreen18 DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq
01:40
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Researchers have discovered that Reindeer can change their eye color when adjusting to different lighting conditions. We're putting out new episodes Monday-Saturday, so please tune in daily and subscribe! You can also like, share, and comment on this video by using this link: http://youtu.be/deo3a3GcYo8 Check out some of Alex's personal YouTube content on his Damitsgood808 channel!: http://www.youtube.com/damitsgood808 Take a look at all of our other awesome animal shows at http://animalist.com And don't forget to subscribe to Animalist! http://www.youtube.com/subscription_center?add_user=animalistnetwork MORE FUN LINKS FOR YOUR FACES! Twitter: https://twitter.com/animalists Facebook: https://www.facebook.com/AnimalistNetwork Google+: http://gplus.to/animalist Pinterest: http://www.pinterest.com/animalists/
02:54
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Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Human eyes are made up of a wide variety of different interesting parts. Find out about the anatomy of human eyes with help from a biological sciences expert in this free video clip. Expert: Michael Maidaa Contact: www.linkedin.com/pub/michael-maidaa/38/2b2/221 Bio: Michael Maidaa graduated from USC Santa Barbara with a B.S in Biological Sciences. Filmmaker: bjorn wilde Series Description: Many biology topics aren't nearly as difficult to understand as a lot of people seem to assume. Get tips on biology and DNA with help from a biological sciences expert in this free video series.
00:30
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Eye Color The gene that codes for brown eye color is dominant over that for blue. A man with two genes for brown eyes and a woman with two genes for blue eyes will produce all brown-eyed children, each of whom possesses one gene for brown eyes and one gene for blue eyes. If, however, two parents with brown eyes each carry the recessive gene for blue eyes they will produce children in the ratio of one blue-eyed to three brown-eyed.