Generally speaking, the vertical axis of a tropical cyclone, usually defined by the location of minimum wind or minimum pressure. The cyclone center position can vary with altitude. In advisory products, refers to the center position at the surface.
Facts on vitamin A and psoriasis. 1  Vitamin A can be very effective in treating psoriasis. 2  Creams and tablets can be prescribed. 3  High doses of Vitamin A should only be given under specialist supervision.  A combination of Vitamin A and phototherapy (light treatment) can give excellent results of most patients.
1 Vitamin A and beta-carotene-necessary for night vision. 2  Vitamin B complex-the B complex vitamins may help prevent high homocysteine levels developing in the blood. 3  These are associated with vascular problems that affect the retina.4  Vitamin C-may reduce the risk of cataracts. Vitamin A and beta-carotene-necessary for night vision. 2  Vitamin B complex-the B complex vitamins may help prevent high homocysteine levels developing in the blood. 3  These are associated with vascular problems that affect the retina.