Question

Which of the following conditions can result from a deficiency of vitamin A?

1) Conduction deafness
2) Otitis media
3) Night blindness
4) Glaucoma

Answer 1

Vitamin A deficiency can lead to night blindness, an impaired immune system, and other visual impairments such as keratomalacia. It does not directly cause conditions like conduction deafness, otitis media, or glaucoma.

Step-by-step explanation:

A deficiency in vitamin A can result in several health issues, one of which is night blindness, also known as nyctalopia. Night blindness involves difficulty seeing in low light conditions and is a direct result of a lack of vitamin A, which is crucial for the production of the pigment rhodopsin that the retina needs to see in low light conditions. Other conditions that can stem from vitamin A deficiency include keratomalacia, which involves the drying and clouding of the cornea and can lead to blindness, as well as an impaired immune system which makes the body more susceptible to infections.