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.
Vitamin A. Vitamin A is vital for night vision, but it also affects tears. Lack of vitamin A damages the tear film. A prolonged deficiency causes severe dry eye, which can lead to eye ulcers, scarring and blindness, reports the Linus Pauling Institute.our diet can help prevent or treat dry eyes. Photo Credit Branislav Ostojic/Hemera/Getty Images. Lack of tears in your eyes causes dry eyes. Proteins, minerals and vitamins are all critical for making tears, which means that a lack of vitamins could increase your risk for developing dry eyes.