How to Avoid the Incidence of Macular Degeneration？

[lucoss]

If one finds that his central vision declined, here is a possibility that he is suffering from Macular Degeneration. The sufferers of the problems are almost over 65, so it is an age-related problem, also called AMD, a main threat for the visions of the serious citizens.
People may wonder what the cause of macular degeneration is. Macular is a very important part in eyes, which can connect the eye nerves and the brain. If the macular is damaged, the signal of the eyes can not be reflected to the brain, and people suffer from sight loss.
In fact, according to different criteria, there are many types of macular degeneration. It mainly falls into two types, the dry and the wet macular degeneration. The former type is more common than the latter one, with a ratio of 8:1. If people’s central visions get lost, they may be suffering from dry macular degeneration. While the wet macular degeneration is much worse than the dry type. Some abnormality in the cornea will lead to wet macular degeneration. There are some in-growth-tissues in the corneas of the patients with wet macular degeneration. The reason is corneas need more oxygen.
Here is a survey on the present state of AMD in the U.S. and Canada. Wet macular degeneration can always lead to much serious outcomes than people can think-blindness and vision loss. Now there are about 1.75million sufferers of such disease. And the number will almost double as time goes by within 20years. The possibility of this problem for people under 60 is very low. But it is high among population over 75, at a ratio of 30%. In Canada, the possibilities among the younger group and the older group are much higher, at ratio of 23% and 56% respectively.
If people find that there is any blurriness in their central visions, they may have suffered from dry Macular Degeneration. On the contrary, if people find their visions are crooked for some unknown reason, they may have got Wet Macular Degeneration.
Here are some known factors that make lead to the occurrence of Macular Degeneration. The foremost important one is gene-related factor. People may get this disease just for hereditary reasons. That’s to say some specific groups are prone to this problem more easily than others.
Still, other bad habits can also lead to this problem, as smoking, less exercises, imbalanced diet, etc.
It seems that macular degeneration is really horrible. And many people just wonder whether there is any solution for it. In fact, a healthy lifestyle can greatly reduce the risks of macular degeneration. One should try to avoid smoking, do more exercises, protect him or her under sunlight, etc.
reference
•New discoveries of macular degeneration

[anita]

The macula is located at the back of the eye at the centre of the retina. It enables us to see fine detail and objects directly in front of us. It also helps us to recognize faces and see colours. Dry AMD is the most common form of the condition, with cells in the retina failing to function properly as a person gets older. Tiny abnormal deposits, called drusen, are deposited under the retina, making it uneven. In time, retinal cells can degenerate and die causing sight loss. This occurs very gradually over many years, hence the term 'age-related'.

Wet AMD accounts for 10 - 15% of cases. It often develops quickly and is also known as 'neovascular AMD' because it involves the growth of new blood vessels behind the retina. These new blood vessels are very fragile and so may leak fluid or blood, resulting in scarring that causes rapid visual loss. If you notice any change in your sight, we advise that you see your optician as soon as possible. www.visionexpress.com is offering a really good deal for Eye Test.

[anita]

Knowing the symptoms of common eye conditions can help you to prevent what could be a minor infection or problem from becoming a major health issue. Some eye conditions can be indicators of deeper, underlying health problems such as diabetes  or high blood pressure, which with the right treatment can be managed or even eradicated. However, it is essential that you have regular general health checks as well as regular eye test: http://www.visionexpress.com/eye-health/eye-test/ to ensure a healthy lifestyle.

[mtptl77]

Like many diseases, causes for age-related macular degeneration can be categorized as either "nature" or "nurture". Researchers think these factors, when used in the proper model, can be strong predictors of the disease.

Age-related macular degeneration is a disease associated with aging that gradually destroys sharp, central vision. Age-related macular degeneration is the leading cause of vision loss in Americans 60 years of age and older.

A study shows that multiple genetic, ocular and environmental factors, including six genetic variants, age, smoking and body mass index heavily contribute to the incidence of macular degeneration. Because all of these factors are related to macular degeneration, they were combined and used to develop a predictive and possibly diagnostic model.

"The determinants of the model can be assessed by completing a questionnaire and taking a blood test, and it is a tool which could be used to help guide prevention and treatments" said lead author and principal investigator, Johanna M. Seddon. "Such information may be also be useful for screening those at high risk of age-related macular degeneration due to a positive family history or having signs of early or intermediate disease even among those with normal vision," the study says.

Over 1,400 individuals in the Age-Related Eye Disease Study (AREDS) with an average follow-up time of 6.3 years were evaluated, and genetic specimens were genotyped in the collaborator's lab in Boston. Both prevalence and development of advanced dry and wet macular degeneration over the course of the study were included in the analyses. Researchers found all tested variables to be independently associated with macular degeneration. The predictive power of the variables in the formula was very high, and the probability that the risk score based on the group of factors in that model for a progressor was higher than the corresponding risk score for a random non-progressor within the same 10 year age group was 83%.
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