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A varied and balanced diet should supply us with sufficient quantities of all the vitamins and trace elements needed to keep us in good health. The human body stores Fat-soluble vitamins, mainly in the liver or adipose tissue subsequently these types of vitamins do not need to be consumed on a daily basis, however water-soluble vitamins cannot be stored by the body so it is necessary to consume these on a regular basis as vitamins are substances that the body cannot produce.
This was the first vitamin to be discovered, Vitamin A is categorised into two main groups; Retinoids and Carotenoids, these are also known as Performed vitamin A. Carotenoids are vital to the eye, these are powerful antioxidants known as lutein, zeaxanthin and lycopene. Vitamin C can also be referred to as ascorbic acid, its most important task within the body is it involvement in collagen production. Trace elements are less understood than vitamins but it is believed that trace elements are minerals required in small quantities to help vitamins to work. Warning Signs of Eye TroubleBlurry vision, spots, glare at night -- these are common eye complaints that can be harmless annoyances or an early sign of disease. Antioxidants Vitamins C and E, Zinc and beta carotene help protect eyes from oxidative stress.
SanGiovanni JP, Chew EY, Clemons TE, et al; for Age-Related Eye Disease Study Research Group. Although there are some specific nutrients considered important for the eye and vision, these can be bought over the counter, in fact many high street Opticians will stock these as they are classed as general sales list medicines which require no supervision from a pharmacist. Excessive amounts of vitamins can build up and may be harmful, however the body discharges these in urine.
Healthy tissues can be damaged by free radicals which are produced by cell metabolism, these free radicals are broken down by the antioxidants in vitamin A. There are several within this group that are significant to ocular health; nutritional amblyopia has been linked to deficiency in thiamine (B1), niacin (B3), folic acid (B9), or cyanocobalamin (B12) or a combination. It is an antioxidant and is necessary for wound healing and the preservation of healthy blood vessels. It has a vital function in the metabolism of vitamin A and is found in the choroid and retinal receptors and may be connected in maintaining the health of the crystalline lens. The relationship of dietary carotenoid and vitamin A,E, and C intake with age-related macular degeneration in a case-control study: AREDS Report No.
The role of Omega-3 long-chain polyunsaturated fatty acids in health and disease of the retina.

Vitamin A is associated with general maintenance of the eye, achieving a healthy epithelium and the production of mucus. Vitamin C deficiency causes fatigue and bruising and in severe cases leads to the condition of scurvy. It is connected with the protection of cell membrances, and helps protect vitamin A from oxidation in the retina. Zinc deficiency causes poor wound healing and night blindness and has been linked in disease of the optic nerve. So be sure to visit an eye doctor promptly about any changes or concerns about your vision.
It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health.
Insufficient vitamin A leads to reduced night vision, susceptibility to infection and conjunctival corneal drying. Vitamin E is present in many foods and deficiency in a normal diet is rare but may arise in people with digestive problems who are unable to absorb dietary fats. Vitamin B complex is present in many foods and deficiency in a normal diet is rare, but absorption by the digestve system of B1 and B12 in particular is easily unsettled by alcohol. This sensitive membrane lines the back of the eye (seen in yellow) and sends signals to the brain through the optic nerve. Children with significant hyperopia are more likely to have crossed eyes (strabismus) or lazy eye (amblyopia) and may have trouble reading.
AstigmatismIf you have astigmatism in one or both eyes, your vision may be out of focus at any distance. Surgery may not be right for you if you have severe dry eye, thin or abnormally shaped corneas, or severe vision problems. Macular Degeneration: TestCover one eye and stare at the center dot in this Amsler grid, from a distance of 12 to 15 inches.
People with diabetes need annual eye exams, sometimes even more often if they already have diabetic eye changes. Cataracts: What HappensA healthy lens focuses light into a sharp, clear image on the retina, which captures the image like film in a camera.
But you should see a doctor before taking supplements because too much vitamin A can be toxic.

Floaters and SpecksBlurry spots or specks in your vision that move may be floaters, which are debris in the eye's vitreous gel.
Amblyopia (Lazy Eye)As a child, if one of your eyes can't see well, your brain sometimes favors your other eye.
This condition, called amblyopia, may happen because of an alignment problem of the eyes (strabismus or crossed eyes) or poorer vision in one eye. A patch or drops that blur the vision in the "good" eye can prod the brain to use the other eye. Eye Care: Object in the EyeMany nerve endings are just beneath the surface or your cornea, so a tiny speck can be painful. When not enough flow, perhaps due to dry air, aging, or other health conditions, your eyes can become painful and irritated.
For people with mild cases of dry eye, occasionally using eyedrops labeled artificial tears may do the trick.
Pinkeye (Conjunctivitis)This eye problem is inflammation caused by a virus, bacteria, irritant, or allergy. Your eye is red and you might feel itching or burning and have a discharge from that eye, too. StyeA stye is a tender, red bump that looks like a pimple on or near the edge of the eyelid.
Keep Up With Your Eye ExamsYou need regular eye exams all through your life, especially if eye problems run in your family or if you have other risk factors.
Bulging eyes are a sign of thyroid disease, and a yellow tint of the whites of the eyes can be a sign of liver problems.
If you're suddenly more sensitive to light than usual, see your eye doctor, since that can be a sign of an eye problem. Protect Your EyesGrease splatters from a pan, yard debris flies up from the lawn mower, cleaning solution splashes in a bucket.
So are spinach, nuts, oranges, beef, fish, whole grains, and many other foods in a healthy diet.

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