either of two pairs of mucomembranous folds in the larynx. The upper pair (false vocal cords) are not concerned with vocal production; the lower pair (true vocal cords or vocal folds) can be made to vibrate and produce sound when air from the lungs is forced over them See also glottis related adjective glottal.
Vitamin A drops. Vitamin A eye drops have been found to help provide lubrication for dry eyes and eye drops that contain vitamin A, such as Dakrina, VivaDrops and other over the counter drops with vitamin A added are often preferred to prescription solutions for dry eyes.itamin A eye drops have also been shown to provide treatment for a specific type of eye inflammation called, superior limbic keratoconjunctivitis that affects the cornea and inside of the upper eyelids.
Dry Eyes From a Vitamin A Deficiency. Close-up of a man's dry eye. Photo Credit cesaria1/iStock/Getty Images. The front of your eye has a clear lubrication that coats the surface, and this substance, called the tear film, nourishes and protects your eye.If your eyes do not make the right amount of tears, or if you make tears of a poor quality, you may have dry eye.This condition causes surface irritation, redness and episodes of blurry vision. Certain conditions, such as low vitamin A levels, may increase your risk for dry eye problems.ther Effects. In addition to dry eye problems, a vitamin A deficiency may result in other conditions. A severe or long-term deficiency may result in vision changes, including blindness, particularly in children.