human eye disorders and how to improve your eye vision

 

 Eyes are the most important sense organs which allow us to view this colorful world. We use our eyes to distinguish different colors and lights, change this visions and images, into neural signals and finally transmit them to brain. A saying that “eyes are the soul windows” obviously reveals the importance of eyes. However, people will not notice the importance of eyes until one day they loss the vision. Eyes are quit vulnerable to many disorders like dryness, itching, pink eye, cataract, glaucoma, myopia, hypermetropia and etc. Most people will experience at least one of them during their life or get other temporary eye problems from time to time. Most of these eye disorders are short-lived and will probably go away on their own. However, those eye problems that last for more than a couple of days will develop to serious disorders if left untreated.

About 314 million people are said to be visually impaired globally, among which 45 million are blind, 124 million have low vision and 145 million have uncorrected refractive errors worldwide. Research also has it that, every 5 seconds one person gets blind in the world. Increasing numbers of people are at risk of age-related visual impairment as the global population grows and demographics shift to a higher proportions of older people, both in developed and developing countries.

THE STRUCTURE OF THE EYES


The white part of the eyes is the sclera maintaining the shape of the globe, offering resistance to internal and external forces. It ensures the outside of the eye is light-tight so that light can only enter through a small opening, the pupil. This produces clearer vision, because a smaller opening creates a sharper image. The cornea refracting light is the transparent front part of the eye covering the black circle (pupils) permitting light to enter the retina and colored rings (iris) which is responsible for controlling the diameter and size of the pupils and the amount of light reaching the pupil. Together with the cornea, the lens refract and focuses light on the retina, accounting for approximately two-thirds of the eye`s total optical power. The retina forms the image which will be sent to the brain by the optic nerves.

NEAR-SIGHTEDNESS AND FAR-SIGHTEDNESS.
(MYOPIA & HYPEROPIA)

There are two opposite and most common terms describing nearsightedness and farsightedness caused by the cornea and lens not focusing properly on the retina. Myopia which often happens to young people is a medical condition that collimated light produces image focus in front of the retina and those with myopia see near objects clearly but far away objects appear blurred. Excessive near sight work like prolong reading and sitting in front of a computer screen is the main cause for myopia, though heredity also plays an important role. Myopia has become a plague of western society over the last 100 years, with significant increases even over the last 1-2 decades amongst children. Myopia is usually detected in the young when children playing with each other discover that they cannot see distant objects as well as their friends do, or the class teacher complains that the child makes too many mistakes copying things from the board. Eye care professionals’ most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, but this does not have many risk and side effects. The corrective lenses have a negative optical power which compensates for the excessive positive diopters of the myopic eye.
Hyperopia means that the image is focused behind the retina and it often occurs to the elderly. Common signs of farsightedness include difficulty in concentrating and maintaining a clear focus on near objects rather than far objects, eye strain, fatigue and/or headaches after work. Hyperopia are typically caused by genes and is often confused with presbyopia, a condition that good far vision is observed but blurred near vision occurs because of a reduced accommodative amplitude brought about by neural aging changes with the crystalline lens. Wearing glasses or contact lenses having a positive optical power is the most traditional treatment for farsightedness patients.

THE CATARACT


A cataract is a clouding of the lens or its enveloping the eye that affects vision, varying in degree from slight to complete opacity and obstructing the passage of light. Most cataracts are related to aging and they are very common in older people. Cataract typically progress slowly to cause vision loss and are potentially blinding if untreated. The condition usually affects both the eyes; the other eye will be gradually affected. Age-related cataract is responsible for 48% of world blindness, which represents about 18 million people,
according to World Health Organization (WHO). Cataracts remain the leading cause of blindness.

CAUSES OF CATARACT

The lens of our eyes works much like a camera lens which focuses light onto the retina, where the light is changed into nerve signals and sent to the brain. The lens is made of mostly water and protein keeping the lens clear and letting light pass through it. However, as we age, the protein will lump together, making the lens cloudy and thus form a cataract which will grow larger and affect your vision. Long-term exposure to ultraviolet light and radiation, diabetes, hypertension and advanced age, eye trauma and genes, which eventually lead to free radical damage, are responsible for cataract.

DIABETES AND EYE DISORDERS


People with diabetes get eye problems at an earlier age and the condition progresses more rapidly than in those without diabetes, though eye disorders can happen to everyone. High blood sugar (glucose) either caused by insufficient insulin secretion or insulin resistance will lead to many complications like cardio-cerebralvascular disease, nerve damage, kidney disease, eye disease and etc. Diabetic eye problem is the most common complication of diabetes and the leading cause of blindness in adults aged 20-74. Diabetes can hurt four parts of your eyes- the lens, optic nerve, vitreous and retina due to the damage of tiny blood vessels by high blood sugar and high blood pressure. It causes the lens of the eye to swell, increases intraocular pressure and effects the transmission of the optic nerve, which changes your ability to see. As the passage of time, more and more serious eye diseases will occur. These diseases include damage to the blood vessels in the retina, diabetes induced cataract and glaucoma.

HOW TO PROTECT YOUR EYES



1. Check your eyes regularly and take essential measures to prevent serious eye problems.
2. Avoid intense light. The human eye is sensitive to strong light which damages the retina and can even blind the individual. Wearing sunglasses is the most common form of eye protection against intense light-UV rays from the sun and help increase visibility and bright conditions.
3. Don’t read in the sun or in a poor light; don’t read in bed or in a moving bus. And when you read you should keep the book away from your eyes for about a foot. Take a break after every few minutes (5mins to 15mins) reading or concentrating. Look at distant things to relax your eyes.
4. Increase intake of vitamin- A diet like animal liver, carrot, sweet potato, mango as well as green, leafy vegetable(which are a great source of carotenoid lutein). Vitamin A can prevent night blindness, macular degeneration as well as cataracts, alleviate dryness of the eye and swollen eyelids. In developing countries, deficiencies of vitamin A is said to be the leading causes of blindness.
5. Take regular physical exercise which vital especially in those with known cases of diabetes. It helps to increase glucose uptake by the muscles, enhance the ability to store glucose. Control your blood sugar and blood pressure by regulating your lifestyle and taking medicine and thus reduce the risk of diabetic eye complications.

FEED YOUR EYES BY TAKING GREENWORLD EYE CARE PACKAGE.

Greenworld I-Power capsule:
This natural product from green world is rich in vitamins, mineral substances and antioxidants which prevent the oxidation caused by free radicals, protects the eyes by providing good blood circulation around the eyes, improves the eyesight, prevents cataract, glaucoma, relieves tiredness, dry eyes of students and computer users.

Greenworld blueberry juice and blueberry eye care soft gel:



Pharmacological research showed that blueberry anthocyanins has significant effect on improving eyesight and relieving eyestrain. The blueberry anthocyanins contain critical elements called retina-activate enzymes which is essential to human body and retina, can relieve eyestrain, boost resynthesis of erythroid- able on the retina, enhance eyesight, especially in half-light. Blueberry extract can help protect the eyes from yellow macular, prevents and help treat glaucoma, improve eyesight and visual acuity and ease diabetic retinopathy. It is also effective in easing eyestrain, epiphora induced by wind and presbyopia for middle-aged and senior people.
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