The Importance of the Use of Sunglasses for Eye Health

The energy gained by all living things it is sunlight. Sunlight is needed for the survival of all creatures in addition to its function to illuminate / light the entire earth, but in some corridors there are also bad effects for living things. Where in the sun, there are several types of rays which of each type of light that have a different effect on the lives of living beings, one of which is the Ultraviolet (UV).

UV region covers the wavelength range of 100-400nm and is divided into three bands:

1. UVA (315-400nm)
2. UVB (280-315nm)
3. UVC (100-280nm)

Ultraviolet light hazards to the eye:

UV radiation on the eye will cause an oxidation reaction at the eyepiece will cause cloudiness in the lens so that arose disease called cataract, also damage to the cornea and retina. Ultraviolet rays can also cause wrinkles on skin and eye cancer.

Depletion of the ozone layer is likely to exacerbate existing health effects caused by exposure to Ultraviolet radiation, as stratospheric ozone is a very effective absorbed of Ultraviolet radiation. As the ozone layer becomes thinner, the protective filter provided by the atmosphere decreases. As a result, humans and the environment are exposed to UV radiation levels are higher, and particularly higher levels of UVB that have the greatest impact on the health of humans, animals, marine organisms and plant life.

The many activities that we do in the outdoors and in direct sunlight, has a bad risk to the eye, such as cataracts, corneal problems and other eye problems caused by age.

A study showed that the use of sunglasses beneficial for eye health, among others, to help reduce glare in your eyes, protect your eyes from the dangers of ultraviolet rays, and reduce the contrast.

"To prevent permanent damage to the eye, should all people, both adults and children use sunglasses or a hat," he said. To be more effective, both must be worn when you go outdoors for long periods of time.

Maintain Healthy Eyes accordance Added Age

Good eyesight is one of the key productivity. Unfortunately, the condition can worsen eyesight as you age. Habits and maintain a healthy nutrition is essential for eye conditions are maintained. Outermost part of the eye is the cornea, allowing light spherical bulge can enter the eye. Light then passes through the pupil, transparent space located in the middle of the iris. Behind the lens of the eye pupil are connected to the zonules, functioning muscle fibers tighten and loosen the focus.

Light coming through the lens and the retina, at the back of the eye tissue. The retina then sends the signal through the optic nerve to the brain to translate what is seen by the eye.

Age 0 - to 30-years
When born, the lens inside the eye color is generally clear and flexible. Zonules are connected to the eyepiece is still strong.
As you age, the lens becomes less flexible, and zonules ineffective requiring corrective lenses. If the eyeball is too long, there will be nearsighted.
If the eyeball is rather short, so there was nearsighted. Each time felt a change of vision; you should immediately meet with an eye doctor.
To avoid damage to vision, do eye exercises as directed by ophthalmologist. Get used to reading and TV viewing habits are healthy.
Lutein is found in green leafy vegetables such as spinach and kale is one of the antioxidant protective eyewear. Sweet corn, peas and broccoli also contains lots of lutein.
Vitamin A is important for healthy vision and is found in orange and yellow colored vegetables such as carrots and pumpkin. Fruits and vegetables also provide essential vitamin C, another antioxidant that is good for the eyes.

Age 40 years
"This is the age when people begin to lose the ability to focus on close-range vision. This condition is called presbyopi, "said Dr. Andrew Iwach, spokesperson for the American Academy of Ophthalmology and executive director of the Glaucoma Center San Francisco as reported by FoxNews, Tuesday (03/20/2012).
The cause is the eye lens that retracts harder and weakened zonules. To correct your vision, use reading glasses. How fast is the occurrence of presbyopi different in each person.
"If you always have perfect vision, reading glasses may only be used at the early age of 40 years. People who have nearsightedness is more resistant to interference and often do not notice vision changes due to age presbiopi reach the end of 40 years, "said Jill Koury, an assistant professor of ophthalmology at the University DukeEye Center, in Durham, North Carolina.
If you experience nearsightedness, reading glasses may need to be made at the age of 30 years. Age is also a good time to test a comprehensive vision. The doctor will test the pressure in the eyes and optic nerves checked to see if the nerve is intact.

Age 50 years and over
At this age, the lens hardens and may need to wear corrective lenses strong. Age is also a great risk of eye disease as follows:
1. Cataracts.
Occurs when the lens of the eye becomes cloudy. More than 20 million Americans have cataracts. The main cause of this disease is aging. Smoking and sun exposure also trigger cataracts. If not treated, can lead to blindness.

The researchers at Blue Mountains Eye found that vitamin B, folic acid and vitamin B12 reduce the risk of cataract formation. Research also suggests that consuming omega-3 fatty acids every day could reduce the risk of cataracts.

2. Glaucoma.
The disease is related to the pressure that forms in the eye, resulting in optic nerve damage. Glaucoma causes loss of vision slowly and eventually leads to blindness. This disease is one of the reasons the most common causes of blindness worldwide.

3. Damage to the macula.
The macula is a part of the retina. Macula can be damaged due to genetic or environmental factors that lead to impaired vision.

Initial signs are blurred vision. Macular degeneration is the leading cause of vision loss in people over the age of 65 years. Exposure to ultraviolet light (UV) can accelerate damage to the macula just like cigarettes.

The study found that a combination of vitamin C supplements, beta carotene (vitamin A-forming), vitamin E and zinc can reduce the risk of macular degeneration.