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Mother Nature's Pop Science Guide to The Human Eye - Part Two

Mother Nature's Pop Science Guide to THE HUMAN EYE fwo PART TWO The Martin-Schultz scale is a standard color scale commonly used in physical anthropology to establish more or less precisely the eye color of an individual. The scale consists of 16 colors (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris. IRIS COLORS THE MARTIN-SCHULTZ SCALE 3 4 5 6 7 8 9 10o 11 12 13 14 15 16 BLUE GRAY GREEN HAZEL BROWN +8% ±2% †89% GLOBAL HUMAN IRIS COLOR DISTRIBUTION Eyeglasses are the most common way to improve or correct vision. Contact lenses and corrective eye surgery are alternatives to glasses. Sunglasses and eye black are used to shield the eyes from sunlight. Eye patches and eye masks cover the eyes for rest and darkness or because of injury to the eye. Eye cosmetics accentuate the eyes. VISION ENHANCEMENTS AND ORNAMENTATION EYEGLASSES SUNGLASSES CONTACT LENS CORRECTIVE EYE SURGERY EYE BLACK EYE PATCH EYE MASK COSMETICS Crying is a natural emotional response to certain feelings, usually sadness. It can also serve an emotional purpose as a release of strong positive feelings, including a reaction to beauty. Shedding tears can also be a survival mechanism as a signal of frustratation, being overwhelmed or trying to get someone's attention. WHY THE TEARS? STREAMING TEARS TEAR DUCT •.. . STREAMING TEARS Tears are released from the tear gland in the corner of the eye and roll down the surface of the face between the cheek and the base of the nose. The area around .........FALLEN TEARDROP the eye may become puffy and flush with color. Besides crying, the eyes can communicate so much, including: trouble and calm, desire and hate, tenderness and callousness, reflection and thoughtlessness, seriousness and play, sadness and happiness, attention and inattention, desire and hate, alertness and fatigue, falseness and sincerity, surprise and knowledge, and anger and forgiveness. WINDOWS TO THE SOUL Looking forward Winking Blinking/Eyes shut Squint Cross-eyed/Strabismus Side glance Looking up/Rolling eyes back Looking down Anger Wide-eyed/Stare Bored/Tired Bags under the eyes The English language offers countless, colorful idioms and expressions pertaining to the human eye. Some are literal while others are quite imaginative. Our windows into the soul and the ways we describe their intent range from "casting the evil eye" to "when Irish eyes are smiling." Feast your eyes on these! EYE EXPRESSIONS AN EYE FOR AN EYE CRIED MY EYES OUT SEE EYE TO EYE I COULD HAVE DONE IT WITH MY EYES CLOSED BLACK EYE WITHOUT BATTING AN EYE MORE THAN MEETS THE EYE BEAUTY IS IN THE EYE OF THE BEHOLDER HERE'S MUD IN YOUR EYE! GET SOME SHUT-EYE PULL THE WOOL OVER HIS EYES SHE HAD STARS IN HER EYES KEEP YOUR EYES PEELED IN THE BLINK OF AN EYE A SIGHT FOR SORE EYES APPLE OF YOUR EYE Sources: Daniel McNeill's "The Face" / "World Book Encyclopedia" / "Compton's Encyclopedia" / http://www.buzzle.com/articles/eye-color-percentages.html / http://www.webmd.com/balance/features/why-we-cry-the-truth-about-tearing-up / http://www.colour-blindness.com/general/how-it-works-science / http://science.howstuffworks.com/life/human-biology/colorblindness2.htm / NTC's Dictionary of Everyday American English Expressions Infographic & Design: Chris Rooney (@looneyrooneycom)/MNN mnn HIS EYES WERE BIGGER THAN HIS STOMACH EYE CANDY

Mother Nature's Pop Science Guide to The Human Eye - Part Two

shared by ChrisRooney on Jun 22
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Why do we blink? Why do we have two eyes instead of one? And why do we have eyebrows at all? Humans rely heavily on sight, yet we tend to overlook the amazing organs that make it possible. To help...

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