We have all heard that carrots improve night vision, but is it the truth? Eye care professionals say that carrots can't actually improve your vision. However, they do provide large quantities of beta-carotene, a vitamin that is beneficial for your eye health and therefore eating carrots and other beta-carotene rich foods is clearly advised for ensuring eye health.
Beta-carotene is an orange colored pigment (carotenoid) that changes into vitamin A after it's absorbed in the human body. Vitamin A guards the surface of the eye (cornea) and has been shown to be preventative for a number of eye diseases such as corneal ulcers. Vitamin A, which is composed of a number of antioxidants, protects the surface of the eye to reduce the risk of ocular infections and other infectious diseases. Vitamin A has also shown to be a successful solution for dry eye syndrome as well as other eye disorders. A deficiency of vitamin A (which tends to be more common in poor and developing countries) often causes night blindness, corneal ulcers and retinal damage which can contribute to complete blindness.
There are two types of vitamin A, which depend upon the food source they come from. Retinol is vitamin A that comes from an animal origin such as beef, chicken liver, or dairy products. Vitamin A that is fruit and vegetable-derived exists in the form of ''provitamin A'' carotenoids, which convert to retinol after the food is absorbed. In addition to carrots, carotenoids are ingested when eating colorful produce particularly those that are bright orange or green in color.
There is no question that through most forms, vitamin A contributes to the health of your eyes and your overall well being. Although carrots themselves can't fix optical distortion which causes vision impairments, grandma had it right when she advised ''eat your carrots.''