Definition of constraint in the AudioEnglish.org Dictionary. Meaning of constraint. What does constraint mean? Proper usage and audio pronunciation (and phonetic transcription) of the word constraint. Information about constraint in the AudioEnglish.org dictionary, synonyms and antonyms.
Ensures Healthy Eyes: Vitamin A can aid in improving vision. It enables your eyes to adjust to light changes, keeps the eyes moist, and also improves night vision. It can prevent many conditions like dry eyes as well. It helps in the formation of visual purple in the eyes, which can improve the vision of weak eyes.
1 Vitamin A is also important to maintaining healthy skin and it helps the body to resist infection. 2  Benefits of Vitamin A Vitamin A is important for the immune system, and it keeps skin and mucous membrane cells healthy.3  Vitamin A helps to fight cancer by inhibiting the production of DNA in cancerous cells. Foods That Contain Vitamin A Vitamin A can be found in both animal and plant foods. 2  It is found as retinol in animal foods and as carotenoids in plant foods. 3  These are compounds the body can convert into vitamin A. The single best source of vitamin A is liver.