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Part 2: How the Eye Stays Rested

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Transcript

How the eye can stay rested. Let's talk about that. The Eye Movement remember we talked about the pakad. The succot is how our eyes move constantly from one spot to another. Your eyes make incredibly rapid movements over hundreds of thousands a day. And the information taken in through this continual scanning movement is called the cod on micro Sokak.

This akata is transmitted to the brain for perception, both in voluntarily and efficient, rapid understanding of the whole of what you're looking at comes from the succot. Remember, you don't see with your eyes you see with your mind and your brain and to succot is the eye movement that gets related to how your brain gets to process it efficiently. The succot as you see on your screen is continued Refresh is continually sends refreshed information to the brain. Each sicard causes the image you see to shift to a different part of the retina. This allows the image to adapt to a new neuron in your brain and in turn for the brain to interpret the senior fresh, because if you don't get a fresh look, it will all of a sudden just dissipate. Now, very, very important information is how you blink because people who work on a computer tend not to blink as much as the tear film, and the blinking process also makes vision possible.

The tear film the tear film is the moisture laden surface of the eye. The tear film is made up of three layers, the mucous layer, the aqueous layer, and the liquid layer. These three layers work together to remove debris from the surface of the eye to lubricate it, and protect it. The staccato and blinking together is when we blink, the staccato is interrupted. It takes a break. blinking.

Do you know that we normally blink about 10 to 12 times a minute. And blinking helps to maintain the tear film. When we are intensely focused on one subject, whether on a computer screen in front of us, when our deer in the distance, our blinking slows to an average of three to four times a minute. When we are focusing intensely, we do not want to interrupt that focus. Therefore, we tend to unknowingly stop blinking. This is one of the major problems which causes computer eyestrain.

What are the effects of Slower blinking and less blinking, increase the ability to maintain focus on the subject. However, the tear film begins to become unstable and thin after only 10 seconds without blinking. That's why if you just keep your eyes open, and don't blink, you'll start to feel irritation there. an even distribution of the tear film across the surface of the eye can create irritation and fatigue. So I recommend that you consciously engage your eyes and blinking when working at a computer, playing fully so that the eyelids tuck briefly and very, very important. Remember to breathe.

I believe in the mantra, breathe and blink, especially when you're on the computer. Now what else do we use as part of our eye when we're on the computer or in daily life? The muscles of the eye. So I think we'll have a little discussion about what muscles get involved in working on the computer. In order to perform close work, several sets of the muscles in your eye are active. One, the extra ocular muscles to the ciliary muscles, and three, the pupillary muscles.

The extra ocular muscles cause the eyes to converge to a specific location. If you're looking far away, your eyes are straight. And when you look at the computer, your eyes Come in the ciliary muscles, the inter ocular muscles inside your eye, these fiber strands known as the zonules of Xin, these are the ones that finally take this finally tune the shape of your lens, because the lens of your eye has to focus when looking at a close distance. When you look at the computer screen for a long time, Time, the ciliary muscles eventually lose their ability to remain contracted. As the ciliary muscle loosens, focus becomes blurry. pain may set in and headaches and other symptoms may develop the pupillary muscles of the eye, those are the black area of your eye is the pupil.

This causes the light causes the people to constrict, so that light only hits the center of the retina. So if you wear glasses or contacts, then your focus is locked into a specific range. Your eye muscles not needing to shift but clear a focus, lose their muscle tone, their flexibility and their ability to focus accurately. What is the pathology of computerized strain? Two main issues that cause computer eye fatigue and contribute to potentially serious vision problems, one eye movement and the distance of the computer and to blue light, eye movement and distance, our daily activities for a tremendous shift from how our grandparents and parents lived. Since humans evolved as hunters and gatherers, our vision was designed for distance.

You know, computers didn't exist, television didn't exist, we just had to survive. In the outside world. I movements and distance, our eye muscles are most relaxed, ah, when we're using our distance vision. That's why farmers have a lot less vision problems than accountants. accountants look up close old day, therefore putting their eyes on the more continual stress I'm movement distance. vision problems as I just said, arise from long hours of close work in poor store in poor light can bring eyestrain.

Studies show that digital devices digital device users blink about half as frequently and the surface of their eyes get drier. Humans are designed to move not just sit constrained and a little chair sitting all day in one position is unnatural and has consequences for both vision and general health. And the blue light. More research is coming involved in blue light and we're going to share it with you today. The damage to the retina occurs from blue light, which is emitted by digital screens, electronic devices, fluorescent energy saving light bulbs and LED lights lighting. The sun also emits blue light.

So we are at risk for exposure when outdoors as well. Look at this graph about ultraviolet, blue light and beneficial light. Now, what is blue light? It's the shortest wavelength in the visible spectrum and therefore it has more energy. The blue light can create glare, it can reduce your visual contrast sensitivity. It can affect your actual visual acuity.

And it can cause eye strain, headaches and fatigue if constantly exposed to blue light, and that is what computers do do. the damaging effects of blue light are more serious in the low light conditions when the pupil is enlarged and takes in more light. So at night or if it's dark, Your pupil gets bigger. So therefore the blue light if you're working in the dark and working on your computer can affect you even more. In natural daylight, blue light is combined with other spectrums of light that help us maintain our circadian rhythms. artificial light at night confuses our brains into thinking it is still daytime.

And this can affect their ability to sleep well. The lack of blue light at night stimulates the pineal gland that produces adequate amounts of melatonin which helps us to sleep

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