U.S. National Library of Medicine (Medical Line Plus), explains that the body needs at least 13 essential vitamins to function properly, among which vitamin A, vitamin B, vitamin D, vitamin C, etc. are the most prominent.
“A healthy diet includes adding vegetables and fruits every day“, he points out. This means 2 to 3 servings of fruit and 3 to 5 servings of vegetables per day.
In this way, vitamin A stands out because it is involved in the formation of tissues such as teeth and skin, or soft and bony tissues. However, it is so important that without it, early blindness may occur.
The Medical Encyclopedia states through its online service that this vitamin “promotes good vision, especially in dim light.” Additionally, it produces pigment in the retina of the eye, which is why it is called retinol.
“Carotenoids are the pigments that give fruits and vegetables their yellow, orange, and red color. The body is able to convert some carotenoids into vitamin A,” the NIH notes in its fact sheet.
It should also be taken into consideration that vitamin A can be obtained through dietary supplements, but if possible you should consult a health professional before taking it regularly.
Therefore, vitamin A deficiency can lead to night blindness or dry eye syndrome, according to Merck Manual “It’s dryness of the conjunctiva and cornea.”
But it should also be taken into consideration that excessive consumption of this vitamin may cause birth defects or poisoning in pregnant women, depending on the case.
According to the World Health Organization, the most serious causes of visual impairment include cataracts, refractive errors, glaucoma, macular degeneration and diabetic retinopathy.
“this Uncorrected refractive error remains the leading cause of visual impairment in children and adults in all countriesthe entity added on its official website.
Finally, all eye conditions that do not cause visual impairment but also require medical care, such as conjunctivitis, blepharitis, and dry eye, are patients seeking pain relief.
“While vision loss affects people of all ages, the majority of people with visual impairment and blindness are over the age of 50,” he concluded.