Many studies have shown that proper zinc supplementation can help improve eye function, prevent eye diseases caused by aging and increase retina brightness.
Research has shown that zinc supplementation combined with antioxidants (vitamin C, vitamin E, beta-carotene) can slow the progression of age-related macular degeneration - the leading cause of blindness in the elderly.
Zinc is concentrated in the retina and capillary - which supply blood to the optic cells. According to the World Health Organization, zinc plays a catalytic role in the conversion of vitamin A into rhodopsin - a pigment in the eyes that helps to see in low light conditions. Zinc deficiency can reduce the ability to regulate light, leading to blurred vision or wheezing, especially at night.
Foods rich in zinc that are good for the eyes include oysters, pumpkin seeds, animal liver, beef, green beans, whole grains. However, it should not be overused because overdose zinc supplementation (over 40 mg/day for adults) can cause digestive disorders and inhibit the absorption of other minerals such as copper.
Zinc is an essential factor in maintaining healthy vision, especially in preventing retinal diseases and increasing the ability to adapt to light. Zinc supplementation needs to be done reasonably, based on reputable medical instructions and through a balanced diet.
