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Macular Degeneration   Information You Need
Basics

Age-related macular degeneration (ARMD) Or Macular Degeneration is the leading cause of blindness in adults over the age of 60. Approximately one out of five people age 65 to 74, and one of three people over age 75 in this country will suffer some visual impairment due to Age Related Macular Degeneration. ARMD rarely affects people younger than 50 but is present to some degree in 30% of people at 75 with another 23% developing signs within 5 years of reaching 75.
The macula is a small circular zone of the retina where images are focused. It is the portion of the eye responsible for fine vision. In macular degeneration, clumps of yellowish cellular debris gradually accumulate within and beneath the retinal pigment epithelium. These deposits are visible to the clinician looking inside the eye as small yellow dots known as drusen.
Macular Degeneration affects both distance and close vision making some activities like driving, sewing, reading or watching TV difficult. Macular Degeneration by itself does not result in total blindness. Affected patients continue to have some useful vision and are generally able to take care of themselves.
There are two forms of Macular Degeneration, "wet" and "dry". About seventy percent of ARMD patients suffer from the "dry" form, which occurs when the retinal tissues thin with age. Certain nerve cells in the retina change, thinning of the macular tissues and disturbances in its pigmentation. Thirty percent experience the "wet" form, which can involve bleeding within and beneath the retina, opaque deposits, and eventually scar tissue.

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Symptoms

ARMD develops differently in each person. Because it will affect different regions of the macula from person to person, the symptoms tend to vary. Declining vision noticed by the older people during a routine eye exam may be the first indicator of ARMD. The formation of new blood vessels and exudates from blood vessels in and under the macula is often the first physical sign that macular degeneration may develop. In addition, the following signs may be indicative of ARMD: 

  • Straight lines appear distorted and, in some cases, the center of vision appears more distorted than the rest of the scene. 
  • A dark, blurry area or "white-out" appears in the center of vision. 
  • Color perception changes or diminishes.
  • Loss of the ability to see objects clearly, vision that is noticeably distorted, straight lines appear wavy, or objects appearing to be the wrong shape or size. 

Any aged people experiencing these symptoms should consult an ophthalmologist immediately.
The Dry macular degeneration, which consists of a thinning of the macula and yellow pigmentation spots called drusen forming in a scattered random pattern, is present in about 90% of ARMD cases. Progression of this condition is unpredictable. 
The Wet macular degeneration accounts for the remaining 10% of ARMD cases and consists of a proliferation of capillary type blood vessels beneath the macula, which leak and distort the macula. This condition predictably progresses to complete loss of central vision. 
Neither dry nor wet ARMD causes any Discomfort. The most common symptom of dry ARMD is slightly blurred vision. The patient may need more light for reading and other tasks. As dry ARMD gets worse, the patient may see a blurred spot in the center of vision. This spot occurs because a group of cells in the macula have stopped working properly. Over time, the blurred spot may get bigger and darker, resulting in a further reduction of central vision. 
An early symptom of wet ARMD is that straight lines appear wavy. This happens because the newly formed blood vessels leak fluid under the macula. The fluid raises the macula from its normal place at the back of the eye and distorts your vision. Another sign of wet ARMD is rapid loss of central vision. This is different from Dry ARMD in which loss of central vision occurs slowly.

Prevention

There is no known effective Beneficial Effectsion for ARMD. Some scientists have suggested an association between macular degeneration and high saturated fat, low carotenoid pigments, and other substances in the diet. Some of the recommended lifestyle changes include stopping smoking, eating a well balanced diet that is rich in leafy green vegetables, especially spinach, the use of a daily vitamin supplement that rich in zinc, wearing sunglasses with ultraviolet absorbing lenses, taking regular, cardiovascular exercise, and reducing serum blood cholesterol levels.

Causes

Age-related Macular Degeneration (ARMD), as the name described, occurs most often in older people. However, the problem of the eye may occur during middle age. It is thought to be family related, but may not necessarily be an inherited trait. Women tend to be at greater risk than men. Deposition of substances on the wall of blood vessel, leading to narrowing of blood vessel is a well-accepted risk factor for macular degeneration. Other risk factors are high blood pressure, cigarette smoking, and being Caucasian.

Diagnosis

Eye care professionals detect ARMD during an eye examination that includes: Visual acuity test: This eye chart test measures how well you see at various distances. Pupil dilation: This examination enables your eye care professional to see more of the retina and look for signs of ARMD. To do this, drops are placed into the eye to dilate (widen) the pupil. After the examination, your vision may remain blurred for several hours. Tonometry: This is a standard test that determines the fluid pressure inside the eye. Increased pressure is a possible sign of glaucoma, another common eye problem in people over age 60. One of the most common early signs of ARMD is the presence of drusen. Drusen are tiny yellow deposits in the retina. Your eye care professional can see them during an eye examination. The presence of drusen alone does not indicate a problem, but it might mean that the eye is at risk for developing more severe ARMD. While conducting the examination, your eye care professional may ask you to look at an Amsler grid. This grid is a pattern that resembles a checkerboard. You will be asked to cover one eye and stare at a black dot in the center of the grid. While staring at the dot, you may notice that the straight lines in the pattern appear wavy to you. This may be a sign of wet ARMD.

Dietary Guidelines

The macula’s fragile cells are highly susceptible to damage from oxygen–charged molecules called free radicals. Early research has shown that people with a low dietary intake of antioxidants, nutrients in food that fight the damaging effects of free radicals in the body, may be at increased risk of developing ARMD. Alcohol may also deplete the body of antioxidants. High levels of saturated fats and cholesterol harm blood vessels and are also involved in producing free radical reactions that can damage the macula.

Home Care Suggestions

If you smoke stop immediately. A recent study showed that smoking, which reduces protective antioxidants in the eye, more than doubles the risk of ARMD. The study found that ARMD is more than twice as common in people who smoke more than one pack of cigarettes a day, compared with people who do not smoke, and the risk remains high even up to 15 years after quitting.

Mind/Body Considerations

The quality of our lives is what matters. Having an optimistic outlook on life Enhances tremendously. As with all problems it is good to have a positive outlook and a strong will. ARMD is a highly frustrating condition, which greatly affects your day–to–day living by making it difficult to read, write, drive, and recognize faces. You may also develop problems seeing in bright sunlight or glare, and find it harder to adapt from dark to light conditions. While you cannot change your age, your sex, or your family tree, there are some changes you should bring about in your life to Enhance protect your eyes.

  • Wear sunglasses and contact lenses when exposed to ultraviolet light sources.
  • Wear brimmed hats that shade your eyes from direct or reflected sunlight.
  • Eat a diet rich in fruits and leafy green vegetables.
  • Stop smoking, or don’t adopt it in the first place.
  • Limit saturated fats and cholesterol in your diet, and keep your blood pressure down.
  • Limit your alcohol intake; six drinks per week for men and three for women.

Additional Information

Bilberry shows beneficial effects in quenching free cellular damage and also shows favorable effects on vision. Bilberry provides its wholesome effects on eye health and various eye related problems. 1, 2, 3, 4, 5 Ginkgo Biloba is a herb that exhibits its healthful effects on eye health, and also reduces the free radical damage of the cells. 1, 2, 3, 6 Astaxanthin is a valuable substance that shows its favorable effects on problems associated with eye, and lowers the free cellular damage of the body. 7, 8

Disclaimer

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, cure, mitigate, treat, or prevent any disease.


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