Ad
related to: vitamin a levels in eyes symptoms and diagnosis pictures of women- Vision Supplements
A Quality Vision Supplement Can
Improve Your Overall Eye Health
- Combat Eye Fatigue
Understand What It Takes To Combat
Computer Eye Strain & Eye Fatigue
- Which Brand Works Best?
Consumer Surveys Ranking System
Quality Eye Brands & Products
- High-Quality Colostrum
For Everyday Oxidative Stress
Gut Health & Immunity Support
- Vision Supplements
Search results
Results from the WOW.Com Content Network
A major cause of Bitot's spots is vitamin A deficiency (VAD). [4] Rarely, pellagra due to deficiency of vitamin B 3 (niacin) may also cause Bitot's spots. [5] They can also be caused by Colestyramine , which is a bile acid sequestrant which can reduce the absorption of fat soluble vitamins (Vitamins A, D, E, K)
Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. [1] It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries. [1] Vitamin A plays a major role in phototransduction, so this deficiency impairs vision, often presenting ...
Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [1] which is sometimes used to describe that condition, although there may be other causes.
UNICEF regards addressing vitamin A deficiency as critical to reducing child mortality, the fourth of the United Nations' Millennium Development Goals. [10] During diagnosis, night blindness and dry eyes are signs of vitamin A deficiency that can be recognized without requiring biochemical tests. Plasma retinol is used to confirm vitamin A status.
Keratomalacia is an eye disorder that results from vitamin A deficiency. Vitamin A is required to maintain specialized epithelia (such as in the cornea and conjunctiva ). The precise mechanism is still not known, but vitamin A is necessary for the maintenance of the specialized epithelial surfaces of the body.
Aulus Cornelius Celsus, writing ca. 30 AD, described night blindness and recommended an effective dietary supplement, liver being a good source of vitamin A: "There is besides a weakness of the eyes, owing to which people see well enough indeed in the daytime but not at all at night; in women whose menstruation is regular this does not happen.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Vitamin A is supplied through the diet, and a deficiency often results from poor dietary intake of Vitamin A-rich foods. [19] Low dietary levels of Vitamin A can be worsened by infections that cause inflammation in the gastrointestinal tract, which prevent the body from fully absorbing Vitamin A available within digested food.
Ad
related to: vitamin a levels in eyes symptoms and diagnosis pictures of women