Have you ever seen a rabbit wearing glasses? This common saying is not enough to convince us to eat more carrots. What really convinces us is that carotene borrowed the name from carrots. Carotene is a general term for a class of substances, for example, beta-carotene is one of them. Although in the human intestine, beta-carotene can be combined with other related substances to synthesize vitamin A, these vitamins A are often superfluous because meat products can already provide the human body with enough vitamin A.
The Latin name for vitamin A is Retinol, and there is evidence that this substance is related to the eyes. There is a type of cell in the retina that is responsible for the visual response to light and dark. This substance, which can produce black and white images in the brain after sensing light particles, is called rhodopsin, and it is composed of a protein and vitamin A.
In the absence of vitamin A, the ability to see in dim light will be impaired. However, this symptom rarely occurs in developing countries at our (German) latitude. For other types of eye diseases, such as myopia, vitamin A has no therapeutic effect. Regardless of whether we wear glasses or not, the rabbit in the night is just a blurry mass.