The human eye is an organ which reacts to light for several purposes.
As a conscious sense organ, the eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.
In common with the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive the light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.
Importance of EYE :
Eyes are really important. It makes us see all things may it ugly or pretty.
Close your eyes and imagine you have not seen ever since the world and yourself. You will not have an idea with what it looks like when you only feel it. Eyes are very important for the human body. It helps the human body to do its tasks with coordination. Without it, a man won't be able to see the beauty of this wonderful world. Eyes are the windows of the soul. Without eyes, the five basic senses would not be complete. So, it should be present.
Eyes are the parts of our body that perceive light. They allow us to see the world and to understand how objects relate to each other. We can distinguish far objects from close ones and determine their color and shape.
How do the eyes interact with other parts of the body? (Interaction with other Body Parts)
The brain processes the raw data from the eyes to make sense of what you see compared to your knowledge of the world around you. The brain interprets what it receives from the eyes. You do not directly "see".
A clear example of this can be seen from experiments where subjects wear glasses that invert the view (turn it upside down). After a while the brain will adjust and turn the scene back up the right way because that agrees with other more reliable information you are receiving.
Similarly the brain adjusts changes in color and light levels to better match how the objects should appear.
It also combines the two slightly different views from your left and right eyes to work out the distance of objects from you. Your right eye will show a little more of an object's right side and the left eye will show more of an objects' left side. This is called stereoscopic vision. The difference between the views from each eye becomes less the further the object is away from you.
Our perceptions are not perfect and can lead to misinterpretations of what we see. These are called optical illusions.However even though the brain's processing can be inaccurate, at most times we perceive a faithful reconstruction of the real world. Only optical illusions remind us that there is at times a difference between perception and the true state of affairs. Without our eyes and the complex processing of visual information by our brains we would not be able to make sense of writing, art or photos, nor understand as much as we do from limited visual information.
"If you care your Eye "
"If you don't care your Eye"
This are some products using that u can care your beautiful Eye...
Dark spot on eye :
The human eyeball contains a clear transparent gel like structure called the "vitreous".
The vitreous consists mainly of water and a few solid elements. The 'solid' portion consists of collagen fibrils and molecules of hyaluronic acid.
As we grow older, there is a chemical change in the vitreous causing it to become "more liquid". This is also associated with 'grouping' or 'aggregation' of the collagen fibrils into small clumps.
These 'clumps' throw a shadow on the retina producing a sensation of 'dots' or 'threads' - this is commonly referred to as a 'Floater'.
Over time you will become less aware of these floaters as the brain learns to ignore these retinal images. Therefore, some floaters may remain in your vision, but many of them will fade over time and become less bothersome.
Floaters, if present since a long time or increasing in number very gradually, are harmless. They may be annoying but do not cause any problems. However, if a new floater comes on abruptly or if there is a sudden increase in the number of floaters, then you must be examined immediately to rule out a retinal tear.
Debris in the tear film can sometimes produce a sensation of 'moving dots' across the line of sight.
The key to differentiating, debris in the tear film from vitreous floaters is that they disappear with blinking only - without eye movement.
Vitreous floaters typically will move more with eye movements rather than with blinking.
In most cases floaters are simply an annoyance. An eye examination will usually reveal if there's something serious that needs medical attention.
Sudden appearance of new floaters, sometimes accompanied by apparent flashes of light in the peripheral (side) vision, should be evaluated by an qualified ophthalmologist.
On rare occasions, these symptoms can be a danger sign that a retinal tear has occurred. The only way to diagnose the actual cause of the problem is by a complete eye examination -- preferably by a vitreoretinal specialist.
Dark circles under Eyes or Dark Circles Beneath eyes :
Dark circles under eyes are very common beauty complaint. Nine out of 10 people have dark circles under their eyes at one time or another. How dark circles under eyes are caused ? The skin under our eyes is very thin. As we get exposed to sun rays, the skin under the eyes gets damaged and becomes more thin and wrinkled. The veins below this thin skin start looking prominent. Thus the wrinkles and prominent veins form dark circles. Some times pigmentation also causes dark circles.
Causes of dark circles under eyes:
Age, Over exposure to sun, Lack of sleep, Lack of nutrients, Allergies, Eczema, Asthma, Hereditary, Fatigue, Chronic diseases, Pregnancy, Menstruation
Solutions for under eye dark circles :
Take care your EYE....
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