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guzman5862

Kids' Health - Topics - Eyes - how your eyes work - 0 views

www.cyh.com/...HealthTopicDetailsKids.aspx

how your eye works

shared by guzman5862 on 07 Nov 14 - No Cached
  • Your eye works in a similar way to a camera - light passes through the lens of your eye and is 'recorded' on the back of your eye (the retina).
    • guzman5862
      guzman5862 on 07 Nov 14
       
      Your eye makes kind of the same effects and uses to a camera because a light goes through your eye so that you can see things clearly and that also happens with the camera but thats the flash.
  • guzman5862 on 07 Nov 14
     
    Your eye works in a similar way to a camera - light passes through the lens of your eye and is 'recorded' on the back of your eye (the retina).
guzman5862

How the Human Eye Works - 0 views

www.livescience.com/3919-human-eye-works.html

human eye works

shared by guzman5862 on 07 Nov 14 - No Cached
  • The cornea is a transparent structure found in the very front of the eye that helps to focus incoming light. Behind the cornea is a colored ring-shaped membrane called the iris. The iris has an adjustable circular opening called the pupil, which can expand or contract depending on the amount of light entering the eye. [The 7 Biggest Mysteries of the Human Body]
    • guzman5862
      guzman5862 on 07 Nov 14
       
      Here is how your eye works. There is a part of your eye named cornea and that is something that you can not see because it is transparent and that is located in the very front of your eye, and it is helpful because it makes stay in the thing your concentrated in. In the back of that there is a shaped important system in the eyes that it is named iris. The iris its very special and decorative but it also has another thing in it it is the pupil, and that its controlled by the light because when there is little light it is little and when there is more light it is more bigger.
  • guzman5862 on 07 Nov 14
     
    The cornea is a transparent structure found in the very front of the eye that helps to focus incoming light. Behind the cornea is a colored ring-shaped membrane called the iris. The iris has an adjustable circular opening called the pupil, which can expand or contract depending on the amount of light entering the eye. [The 7 Biggest Mysteries of the Human Body]
guzman5862

Healthy Eyes, Eye Health Tips [NEI] - 0 views

www.nei.nih.gov/...eyehealthtips.asp

eyes health

shared by guzman5862 on 07 Nov 14 - No Cached
  • Your eyes are an important part of your health. There are many things you can do to keep them healthy and make sure you are seeing your best. Follow these simple steps for maintaining healthy eyes well into your golden years.
    • guzman5862
      guzman5862 on 07 Nov 14
       
      All your body needs to be healthy but theres a very important thing that you need to be aware of so that it is healthy your eye its a very important part because with it you can see but you need to keep it healthy because if not your going to need to use glasses and put liquid in it and you don't want that. So better keep your eye healthy!!
  • guzman5862 on 07 Nov 14
     
    Your eyes are an important part of your health. There are many things you can do to keep them healthy and make sure you are seeing your best. Follow these simple steps for maintaining healthy eyes well into your golden years.
lobo5879

Why Do Some People Have Differently Colored Eyes? - 0 views

www.livescience.com/-differently-colored-eyes.html

people colored eyes

shared by lobo5879 on 03 Dec 14 - No Cached
  • The instance of a person having two differently colored eyes is pretty uncommon, just 11 out of every 1,000 Americans. This uncanny trait is caused by several factors, and can actually develop over time. Iris color develops during the first few months after birth, with the levels of the pigment melanin determining how dark eyes will become. The less melanin expressed in the iris, the lighter a person's eyes look, and vice versa
  • s is pretty uncommon, just 11 out of every 1,000 Americans. This uncanny trait is caused by several factors, and can actually develop over tim
  • Sometimes, though, the concentration and distribution of melanin isn't uniform, which leads to a condition known as heterochromia. This condition can present itself in different ways. There's complete heterochromia, when each eye is a distinctly different color, say, one blue and one brown. Central heterochromia is when the eyes show various colors, such as a blue iris with a golden-brown ring around the pupil. And sectoral heterochromia is when one iris has a splash of color that's different from its overall hue, a trait that actress Kate Bosworth has.
  • ...1 more annotation...
  • Sometimes, though, the concentration and distribution of melanin isn't uniform, which leads to a condition known as heterochromia. This condition can present itself in different ways. There's complete heterochromia, when each eye is a distinctly different color, say, one blue and one brown. Central heterochromia is when the eyes show various colors, such as a blue iris with a golden-brown ring around the pupil. And sectoral heterochromia is when one iris has a splash of color that's different from its overall hue, a trait that actress Kate Bosworth has.
lopez5891

Understanding Genetics - 0 views

genetics.thetech.org/ask377

eyes

shared by lopez5891 on 03 Dec 14 - No Cached
  • Eye color is the result of variations in the amount of melanin, a pigment found in the front part of the iris of the eye.  The lack of this pigment results in blue eyes, some pigment gives green and lots of pigment gives brown eyes.   So light brown eyes just have a bit less melanin than darker brown eyes.  All of the different shades of eye color happen the same way.  Blue-green eyes have an amount of melanin between green and blue, hazel eyes have an amount of pigment between green and brown, etc.  
guzman5862

How the Human Eye Works | Cornea Layers/Role | Light Rays - 0 views

www.nkcf.org/how-the-human-eye-works

human eye works

shared by guzman5862 on 07 Nov 14 - No Cached
  • Light rays pass through a dense, transparent gel-like substance, called the vitreous that fills the globe of the eyeball and helps the eye hold its spherical shape.
    • guzman5862
      guzman5862 on 07 Nov 14
       
      When light pass to inside of your eye it is called a light ray and they travel hard, it is something that you can not see and if you touch it its like jelly but it stays there because it contacts with some part of your body, and that is named a vitreous and it puts allot of things inside the eyeball and that is important because its helpful for the so that it can keep his original form not for the eye to change of shape like (Rectangle, Square).
  • guzman5862 on 07 Nov 14
     
    Light rays pass through a dense, transparent gel-like substance, called the vitreous that fills the globe of the eyeball and helps the eye hold its spherical shape.
lobo5879

Your Eyes - 0 views

kidshealth.org/eyes.html

eyes health eye kids

shared by lobo5879 on 07 Nov 14 - Cached
  • Your eyes are at work from the moment you wake up to the moment you close them to go to sleep. They take in tons of information about the world around you — shapes, colors, movements, and more. Then they send the information to your brain for processing so the brain knows what's going on outside of your body.
    • guzman5862
      guzman5862 on 07 Nov 14
       
      Did you know That without your eyes you maybe will not feel good inside you because with your eyes you have seen all the beutifle things that you had seen in your life but they are opened for all the time exept for when you sleep and blink.
  • guzman5862 on 07 Nov 14
     
    Your eyes are at work from the moment you wake up to the moment you close them to go to sleep. They take in tons of information about the world around you - shapes, colors, movements, and more. Then they send the information to your brain for processing so the brain knows what's going on outside of your body.
lopez5891

How the Eye Sees Color - 0 views

www.colormatters.com/...how-the-eye-sees-color

color eye

shared by lopez5891 on 03 Dec 14 - No Cached
  • Color originates in light. Sunlight, as we perceive it, is colorless. In reality, a rainbow is testimony to the fact that all the colors of the spectrum are present in white light. As illustrated in the diagram below, light goes from the source (the sun) to the object (the apple), and finally to the detector (the eye and brain).  
    • lopez5891
      lopez5891 on 03 Dec 14
       
      Eyes see in a different way that in reality. Like for example white makes all the colors of the rainbow, so the rainbow is actually white but we see it in colors. The sun is actually yellow but we see it a little white.
guzman5862

The Purpose of Crying - HowStuffWorks - 0 views

science.howstuffworks.com/...crying1.htm

Crying works brain tears

shared by guzman5862 on 31 Oct 14 - No Cached
  • What happens when you cry, exactly? A salty fluid chock full of protein, water, mucus and oil is released from the lacrimal gland in the upper, outer region of your eye. This fluid, better known as tears, then flows down the surface of your eye, across your face and smears your mascara.
    • guzman5862
      guzman5862 on 04 Nov 14
       
      Why do people cry? A liquid full of protein, water, mucus and oil goes from the lacrimal gland in the back part of your eye and to the top outer part of your eye. 
  • The reasons for our crying changes as we grow from babies to adults. Learn more on the next page.
deleon6878

The Earth Life Web, the Fish Eye and Sight in Fish - 0 views

www.earthlife.net/sight.html

shared by deleon6878 on 14 Nov 14 - No Cached
  • For sharks and Rays this is not a problem as they do not have color vision anyway. The eyes of shallow water species are adapted to have a maximum sensitivity to light of around 500 nanometres, and the eyes of those species that live in deeper waters are adapted to 475-480 nanometres. Most Teleost fish however have color vision, and the eyes of the Trout (Onkorhynchus mykiss) have three sensitivity peaks at, 455, 530 and 625 nanometres.
    • deleon6878
      deleon6878 on 14 Nov 14
       
      Sharks and Rays are color blind so they don't care about how deep they go cause the deeper you go the less color you see, the fish,sharks,rays,etc that live deeper in the ocean they used to 475-480 nanometers 
    • deleon6878
      deleon6878 on 14 Nov 14
       
      However teleost fish have color vision and the trout have three sensitivity limits at, 455, 530 and 625nanometers so they can see the colors in the water if they go deeper they would not see anything 
lobo5879

Eye Facts: 23 Facts about Eyes you didn't know ←FACTSlides→ - 0 views

www.factslides.com/s-Eyes

shared by lobo5879 on 03 Dec 14 - No Cached
    • lobo5879
      lobo5879 on 03 Dec 14
       
      Did you know that goldfish cant blink or close there eyes becayse they dont have eyelids
    • lobo5879
      lobo5879 on 03 Dec 14
       
      Did you know that an ostrichs eyeis biger than its brain
lobo5879

25 Crazy Facts About Your Eyes - 0 views

list25.com/25-crazy-facts-about-your-eyes

crazy facts eyes

shared by lobo5879 on 03 Dec 14 - No Cached
  • People say “in the blink of an eye” because it’s the fastest muscle in the body
guzman5860

Why Is The Sky Blue? - Geography For Kids - By KidsGeo.com - 1 views

www.kidsgeo.com/...0045-why-is-the-sky-blue.php

blue sky kids

shared by guzman5860 on 31 Oct 14 - No Cached
  • As the light from our Sun shines into the atmosphere, most of the colors are able to reach the Earth’s surface uninterrupted. However, because blue light has a wavelength that is the same size as the particulates in the air, this light is scattered in every direction. This blue light bounces from particulate to particulate until it eventually reaches your eyes. For this reason, no matter what direction you look in the sky, it appears to be blue. This blue light originated with the Sun, was bounced around in the sky many times, and then eventually reached your eyes.
    • guzman5860
      guzman5860 on 04 Nov 14
       
      The blu light bounces from particulate to particulate until it reaches your eye and it wont  matter on what part of the sky you look at it is going to appear blue. 
    • guzman5860
      guzman5860 on 06 Nov 14
       
      The blue light of the sky bounces from one particulate to another many times and if you see up to the sky it is going to appear blue.
lobo5879

Nightmares - 0 views

kidshealth.org/...nightmare.html

shared by lobo5879 on 06 Nov 14 - No Cached
  • Nightmares — like most dreams — occur during the stage of sleep when the brain is very active and sorting through experiences and new information for learning and memory. The vivid images the brain is processing can seem as real as the emotions they might trigger. This part of sleep is known as the rapid eye movement or REM stage because the eyes are rapidly moving beneath closed eyelids. Nightmares tend to happen during the second half of a night's sleep, when REM intervals are longer. When kids awaken from a nightmare, its images are still fresh and can seem real. So it's natural for them to feel afraid and upset and to call out to a parent for comfort. By about preschool age, kids begin to understand that a nightmare is only a dream — and that what's happening isn't real and can't hurt them. But knowing that doesn't prevent them from feeling scared. Even older kids feel frightened when they awaken from a nightmare and may need your reassurance and comfort.
    • lobo5879
      lobo5879 on 06 Nov 14
       
      we have nightmares becuse our brain was active that day and that hapens during the stage of REM (rapid eye movment) when people wake up and remember their nightmare it is normal to be scared. People start realizing  by the age of prescho lthat a nightmare is just a dream and that it will not hurt them and that it dosent mean somthing will hapen to them.
deleon6878

My Library - 0 views

www.diigo.com/deleon6878

fish Facts

shared by deleon6878 on 31 Oct 14 - No Cached
  • For sharks and Rays this is not a problem as they do not have color vision anyway. The eyes of shallow water species are adapted to have a maximum sensitivity to light of around 500 nanometres, and the eyes of those species that live in deeper waters are adapted to 475-480 nanometres. Most Teleost fish however have color vision, and the eyes of the Trout (Onkorhynchus mykiss) have three sensitivity peaks at, 455, 530 and 625 nanometres.
guzman5862

The Healing Properties of Tears: 7 Good Reasons to Cry Your Eyes Out - Beyond Blue - 0 views

www.beliefnet.com/...ays-tears-and-crying-heal.html

cry eyes reasons works facts

shared by guzman5862 on 10 Nov 14 - No Cached
  • 1. Tears help us see. Starting with the most basic function of tears, they enable us to see. Literally. Tears not only lubricate our eyeballs and eyelids, they also prevent dehydration of our various mucous membranes. No lubrication, no eyesight. Writes Bergman: “Without tears, life would be drastically different for humans–in the short run enormously uncomfortable, and in the long run eyesight would be blocked out altogether.”
  • 2. Tears kill bacteria. No need for Clorox wipes. We’ve got tears! Our own antibacterial and antiviral agent working for us, fighting off all the germs we pick up on community computers, shopping carts, public sinks, and all those places the nasty little guys make their homes and procreate. Tears contain lysozyme, a fluid that the germ-a-phobic dreams about in her sleep, because it can kill 90 to 95 percent of all bacteria in just five to 10 minutes! Which translates, I’m guessing, to three months’ worth of colds and stomach viruses.
  • 3. Tears remove toxins. Biochemist William Frey, who has been researching tears for as long as I’ve been searching for sanity, found in one
  • ...5 more annotations...
  • study that emotional tears–those formed in distress or grief–contained more toxic byproducts than tears of irritation (think onion peeling). Are tears toxic then? No! They actually remove toxins from our body that build up courtesy of stress. They are like a natural therapy or massage session, but they cost a lot less!
  • 4. Crying can elevate mood. Do you know what your manganese level is? No, neither do I. But chances are that you will feel better if it’s lower because overexposure to manganese can cause bad stuff: anxiety, nervousness, irritability, fatigue, aggression, emotional disturbance and the rest of the feelings that live inside my happy head rent-free. The act of crying can lower a person’s manganese level. And just like with the toxins I mentioned in my last point, emotional tears contain 24 percent higher albumin protein concentration–responsible for transporting many small molecules (which has to be a good thing, right?)–than irritation tears.
  • 5. Crying lowers stress. Tears really are like perspiration in that exercising and crying both relieve stress. For real. In his article, Bergman explains that tears remove some of the chemicals built up in the body from stress, like the endorphin leucine-enkaphalin and prolactin, the hormone I overproduce because of my pituitary tumor that affects my mood and stress tolerance. The opposite is true too. Bergman writes, “Suppressing tears increases stress levels, and contributes to diseases aggravated by stress, such as high blood pressure, heart problems, and peptic ulcers.
  • 6. Tears build community. In her “Science Digest” article, writer Ashley Montagu argued that crying not only contributes to good health, but it also builds community. I know what you’re thinking: “Well, yeah, but not the right kind of community. I mean, I might ask the woman bawling her eyes out behind me in church what’s wrong or if I can help her, but I’m certainly not going to invite her to dinner.” I beg to differ. As a prolific crier, especially on video, I always come away astounded by the comments … the resounding support of people I know all that well, and the level of intimacy exchanged among them. Read for yourselves some of the comments on both my self-esteem video and my recent death and dying video and you’ll appreciate my point. Tears help communication and foster community.
  • 7. Tears release feelings. Even if you haven’t just been through something traumatic or are severely depressed, the average Jo goes through his day accumulating conflicts and resentments. Sometimes they gather inside the limbic system of the brain and in certain corners of the heart. Crying is cathartic. It lets the devils out. Before they wreak all kind of havoc with the nervous and cardiovascular systems. Writes John Bradshaw in his bestseller “Home Coming”: “All these feelings need to be felt. We need to stomp and storm; to sob and cry; to perspire and tremble.” Amen, Brother Bradford!
guzman5862

Structure of tears influenced by what makes us cry - Telegraph - 0 views

www.telegraph.co.uk/...nced-by-what-makes-us-cry.html

Crying works brain tears information

shared by guzman5862 on 31 Oct 14 - No Cached
  • Tears contain oils, antibodies and enzymes and fall into three categories; basal, which are released continuously to keep the eyes lubricated; reflex, which occur in response to irritants such as when chopping onions or when getting poked in the eye; and psychic, triggered by emotions.
guzman5862

Why do people cry? - WebMD Answers - 0 views

answers.webmd.com/...why-do-people-cry

Brain Information tears

shared by guzman5862 on 31 Oct 14 - No Cached
  • “Crying is a natural emotional response to certain feelings, usually sadness and hurt. But then people [also] cry under other circumstances and occasions," says Stephen Sideroff, PhD, a staff psychologist at Santa Monica--University of California Los Angeles & Orthopaedic Hospital."People cry in response to something of beauty. There, I use the word 'melting.' They are letting go of their guard, their defenses, tapping into a place deep inside themselves."
  • Crying is a
  • "People cry in response to something of beauty. There, I use the word 'melting.' They are letting go of their guard, their defenses, tapping into a place deep inside themselves.
  • ...4 more annotations...
  • sadness
  • melting
    • guzman5862
      guzman5862 on 04 Nov 14
       
      Crying is something created by emotions and feelings such as sadness and pain. But people also cry because they want. People cry because you reach the highest limit of your eyes like when you hit it hurt so much and the hurt goes to all of your body so you destroy your defense/guard and  let the tears pass your eye from deep inside you.
  • Crying may also have a biochemical purpose. It's believed to release stress hormones or toxins from the body, says Lauren Bylsma, a PhD student at the University of South Florida in Tampa, whose research has focused on crying.
    • guzman5862
      guzman5862 on 06 Nov 14
       
      If you cry it can also have some effects that it lets out somethings like hormons toxins and stress from some part of you. And when you releze all those things you feel kind of dizzy.
lobo5879

Nightmares - 1 views

kidshealth.org/...nightmares.html

nightmares dreams

shared by lobo5879 on 31 Oct 14 - Cached
  • While you sleep, your brain doesn't just turn off. It goes through several sleep stages, including REM (rapid eye movement) sleep. Why do they call it that? Because during this stage of sleep, your eyes move back and forth under your closed eyelids. During REM sleep, you have dreams and sometimes those dreams can be scary or upsetting. About every 90 minutes your brain switches between non-REM sleep and REM sleep. The amount of time spent in REM sleep increases with each sleep cycle through the night. The longest periods of REM sleep occur towards morning. If you wake during this REM stage, it is easier for you to remember what you were dreaming about. That's why your most vivid dreams — and nightmares — occur in the early morning hours.
    • lobo5879
      lobo5879 on 04 Nov 14
       
      People have nightmares because when you are in REM (that stand for rapid eye movement) is when you are starting to have dreams and sumetimes the dreams are upseting thats why they are called nightmares
    • lobo5879
      lobo5879 on 05 Nov 14
       
      and evry 90 minutes youre brain desides to go to REM then without REM
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