Today’s topic is – Nutrition and the eye! Good food and nourishment are vital for the effective functioning of the organs of sight.
The various mechanisms active in the eye are dependent on a continuous supply of nutrients. Among these the most important is Vitamin A. The other important nutrients are Vitamins B, C, and E and minerals like zinc and selenium
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Vitamin A is essential for the proper functioning of the covering surface of the eye – the cornea and conjunctiva – and for the formation of a pigment in the retina which helps us to view objects in dim light. It is also important for the body’s immunity.
Vitamin A deficiency is one of the leading causes of childhood blindness in the world. It may occur due to inadequate dietary intake, liver disease or gastrointestinal problems.
This deficiency may result in:
- Conjunctival and corneal drying, called xerosis. This condition may present itself with the appearance of scales resembling those on a fish on the conjunctiva over the white portion of the eye.
- Corneal ulceration and melting.
- Night blindness.
Vitamin A deficiency is termed xerophthalmia and is a serious vision-threatening disorder.
These conditions can be treated by supplementing Vitamin A itself, either in the form of oral medicines or as injections.
A Vitamin A-rich diet can keep children free from these complications. This vitamin is found in green leafy vegetables, yellow and orange colored fruits and in dairy products.
Animal sources include liver, fish, and eggs. An average sized carrot contains twice the recommended daily requirement of Vitamin A.
In infants, breast milk provides the main source of nourishment. Vitamin A-deficient mothers have low vitamin stores and supply little to their babies.
These babies have increases susceptibility to infections and Vitamin A deficiency. Hence the need to breast-feed infants cannot be belittled.
Adequate and timely control of infections such as diarrhea is also essential to prevent Vitamin A deficiency.
Vitamins A, C, and E are antioxidants that protect against toxic damage to the eye. Vitamin B is necessary for normal optic nerve function.
Zinc plays an important role in retinal and lens metabolism. Selenium has some antioxidant properties. Carotenoids are substances present in red, yellow and orange colored fruits, which are found to have antioxidant properties. They are used to combat age-related retinal diseases.
In general, a well-balanced diet with a generous supply of fruits and vegetables is an essential requirement for healthy eyes in a healthy body.
Today’s topic is – Nutrition and the eye is now ended! If you have any questions, please below the comment box and if you like this blog, you can share this. Thank you all!