Vitamin A – Retinol
Vitamin B – There are several sub types of Vitamin B, with different scientific names.
Vitamin B1 – Thiamine
Vitamin B2 – Riboflavin
Vitamin B3 – Niacin/Niacinamide
Vitamin B4 – Adenine
Vitamin B5 – Pantothenic Acid
Vitamin B6 – Pyridoxine
Vitamin B7 – Biotin
Vitamin B8 – Inositol
Vitamin B9 – Folic Acid
Vitamin B10 – Pteroylmonoglutamic Acid
Vitamin B11 – Choline
Vitamin B12 – Methylcobalamin
Vitamin C – Ascorbic Acid
Vitamin D – Calciferol
Vitamin E – Tocopherol
Vitamin K – Menaquinones

There are other less known types of Vitamins too, each one with different set of importance for human body and other chemical usage.

Vitamins for Sense Organs
Vitamins are very important for all our sense organs. Lack of Vitamins can lead to problems in functioning of our sense organs. Vitamins, their importance and the diseases caused by lack of those vitamins are as follows:
Vitamin A (retinol) is helpful for our eyes. Lack of Vitamin A can result to Night Blindness.
Vitamin B and its variants are important for several reasons, lack of them can result Beriberi, Ariboflavinosis, Pellagra, Paresthesia, Anemia and other deficiency diseases.
Vitamin C is helpful for our skin. Lack of Vitamin C can result Scurvy.
Vitamin D is helpful for our bones and their growth. Lack of Vitamin D can result Rickets and Osteomalacia.
Vitamin E is helpful for infants, lack of this Vitamin can result Anemia in infants.