Final answer:
A deficiency of vitamin A can lead to the development of xerophthalmia, which is characterized by dryness of the eyes, skin, and keratinization of various body systems.
Step-by-step explanation:
A deficiency of vitamin A can lead to the development of a condition called xerophthalmia, which is characterized by dryness of the eyes, skin, and keratinization of various body systems. Vitamin A deficiency also affects the immune system, leading to impaired ability to fight off infections and contributes to visual impairments, ranging from night blindness to total blindness.