Rehabilitation is a treatment or treatments designed to facilitate the process of recovery from injury, illness, or disease to as normal a condition as possible.
Symptoms. An early symptom of vitamin A deficiency is night blindness, which is caused by a disorder of the retina. Soon thereafter, the whites (conjunctiva) and corneas of the eyes may become dry and thickâa condition called xerophthalmia.isorders that impair the intestineâs absorption of fats can reduce the absorption of vitamin A and increase the risk of vitamin A deficiency. These disorders include chronic diarrhea, celiac disease, cystic fibrosis, certain pancreatic disorders, and blockage of the bile ducts.
Low levels or lack of Vitamin A in a human body causes Vitamin A deficiency and it is the number one cause of what is known as preventable blindness in children and severe visual impairment.reatment of Vitamin A Deficiency. Vitamin A deficiency can be treated if the state has not worsened for which early diagnosis matters a lot. 1  A diet which is rich in Vitamin A is usually the treatment and the best prevention method of vitamin A deficiency.