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April 9th, 2009
Nowadays it is quite possible to detect the color of the eyes. Scientists of Erasmus University Medical Center Rotterdam have developed a new approach to predicting human eye color, based solely on DNA. The method predicts blue and brown eye color with an accuracy of over 90%.
The researchers analyzed the DNA of more than 6,000 participants of the Rotterdam Study, a large population study among over 45s in the Rotterdam district of Ommoord. They compared the eye color of these people with data from 37 DNA markers previously found to be involved in eye color. The main conclusion is that only 6 DNA markers are needed to predict brown eye color with 93% accuracy and blue eye color with 91%.
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Tags: DNA, eye color Posted in Articles | 1,277 Comments »
April 6th, 2009
If you work a lot in front of computer or just strain your eyes too much, it is quite possible that you’ll get some vision problems. And if you are not eager to take different pills and drops use our methods of natural influence on your eyesight.
Everybody is aware of a great number of eye diseases, but some of them can be prevented. As we’ve written earlier, the first reason of blindness is macular degeneration, and this illness can be avoided due to natural methods.
Instead of our main advice, don’t forget about simple, but very important rules: don’t sit too close to the TV set or a computer, don’t spend much time at the screen (and if you have to, make some pauses doing eye exercises).
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Tags: improving the eyesight Posted in Articles | 6 Comments »
March 26th, 2009
First of all we need to mention that macula degeneration may occur not only among elderly people or Afro-Americans but also AMD can be met among women and white people too. This problem may come as a result of taking some drugs or it can go from parents to children and so on.
So let’s look closer at the factors, which may cause macular degeneration (AMD):
Heredity. The truth is that really macula degeneration may be found in the genes. We mean that if parents had such a problem, than children are very likely to have it too. It is not a rule, but chances grow considerably. It also influences the form and behavior of the disease.
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Tags: Hypertension, Macular Degeneration, obesity, smoking Posted in Articles | 1 Comment »
March 3rd, 2009
To be frank it is very difficult to give advice in such a situation, when it comes to choosing a perfect shape of the frame. It’s connected with the fact that almost each person’s face is a combination of various angles and forms. Still we can distinguish among seven main shapes of the face: square, oval, round, long, diamond, base-up triangle and base-down triangle. Lower you’ll find more detailed descriptions of all these types of the face. Such knowledge can help considerably to choose the best shape of eyeglasses.
Square
If you’ve got a square face with a wide forehead and a powerful jaw (especially when the length and width are practically the same). Our task is to make such a face visually longer and to make the angles softer. Give your preference to narrow frames, or those which are wider than deeper, for instance, narrow ovals.
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Tags: eyeglasses, frames Posted in Articles | 19 Comments »
February 25th, 2009
If you are farsighted it doesn’t mean that you should stay at home all the time or wait for somebody other to help you. Today you can find a great number of various devices that will help you to lead a normal life indoors and outdoors.
One of the usual things with people who have vision problems is sensitivity to light and gaze. It’s especially common for those, who has or had cataracts, diabetic retinopathy or macular degeneration.
There are special lenses for wearing outdoors which have blue-blocking effect and reduce glare. You can use them in sunny or cloudy weather. The colors of such lenses are normally light and dark gray, orange, yellow and different shades of amber.
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Tags: Contact Lenses, eyeglasses, farsightedness, magnifiers Posted in Articles | No Comments »
February 5th, 2009
No wonder that many teens are eager to wear contact lenses instead of eyeglasses, first of all, because they look more pleasant and modern. They are sure that glasses make them uglier, though it is not like that at all.
Actually a lot of refractive problems can be corrected with the help of contact lenses — even such a problem as astigmatism. There will be no difference for their eyes if they wear lenses and not the spectacles. Moreover, contact lenses provide better and sharper vision and less perversion than eyeglasses. It is connected with the fact that lenses are exactly on the eyes.
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Tags: Contact Lenses, eyeglasses Posted in Articles | 7 Comments »
January 20th, 2009
Most cases of cataracts form when people grow older. Actually, the first stages of this problem appear by the age of 30, but it will develop and become a real cataract not earlier that in 30 or 40 years, as usual.
According to the statistics, 70% of American people get cataracts which lead to problems in daily life, till they are 75. On more reason can be diabetes, which can cause even blindness in grown-ups in the age starting from 20 to 74.
Together with diabetes comes also obesity – both problems are connected with early forms of cataract. It may be connected with sorbitol, a great amount of which is in the blood of diabetics. It can store in the lens of the eye and encourage the appearance of cataracts. In such a way, the risk is probably bigger if a person is overweight or it doubles if people are obese.
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Tags: cataracts, diabetes, obesity, smoking Posted in Articles | No Comments »
January 14th, 2009
There are many reasons why you should come through your eye examinations regularly:
1. The first and the most important reason is that we should always be aware of the state of our eyes and the whole organism. Our sight is extremely important, that’s why we should not forget about it and visit an oculist. How often? At least once in two years, in case you have no complaints.
2. Don’t forget that your oculist is able to give you good and useful recommendations and examine your eyes carefully.
3. While examination of your eyes it is possible to reveal the first unnoticeable symptoms that indicate serious illnesses.
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Tags: eye exam, oculist Posted in Articles | 6 Comments »
January 6th, 2009
Good vision is very important not only for adults but for children too. Especially when they study at school, whether we talk about primary school, or teenagers. Low vision may cause problems in the process of learning and perception of information. According to the statistics up to 25 percent of pupils have poor eyesight that affects their success in studies.
Actually, good vision is necessary not only for learning but also for having a rest. It is difficult to go in for sport, to play, run or jump if you can’t see well.
There are clear signs for parents and teachers to understand that their children or pupils have some problems with the sight and need help from a specialist (it can often be astigmatism or poor visual acuity).
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Tags: farsightedness, Myopia, poor eyesight in children Posted in Articles | 12 Comments »
December 15th, 2008
Glaucoma is a chronic disease of eyes with permanent or temporary rising atrophy of an optic nerve, an ophthalmotonus and changing the area of vision. There are different types of glaucoma: primary, secondary and congenital.
The reasons and pathogenesis of the illness. Let’s start with a primary form of glaucoma which can be preceded with trophic frustration in tissues of a forward part of an eye, because of a hemodynamic of an eye and the changes in vascular system. Sometimes general pathological shifts are possible. It produces a malfunction of circulation of a watery liquid and leads to intraocular tension. The high level of the moisture can become a reason of secondary trophic changes in eye’s tissues. Poor eyesight is connected with destruction of functional parts of an optic nerve and retina.
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Tags: Glaucoma Posted in Articles | 29 Comments »
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