Various berry extracts
Anthocyanins from natural berries, such as cyanidin, pelargonidin, peonidin, delphinidin, petunidin, and malvidin, are water-soluble pigments belonging to the phenolic group. They are known as edible cosmetics in European countries. Anthocyanins possess strong antioxidant and anti-inflammatory properties leading to rhodopsin regeneration and visual acuity enhancement. Cyanidin and delphinidin are commonly used for vision care.
Lutein is a natural carotenoid. Lutein itself is a natural antioxidant that helps scavenge free radicals and absorb harmful light damage such as blue light. Lutein is present in the eyes, skin, serum, brain, heart, etc. of the human body to maintain health, while the yellow spot on the retina has a high content of lutein accumulation. Many studies have suggested that oxidation may be It is the cause of cataract and macular degeneration. Appropriate amount of lutein can help protect the eyes from oxidation and harmful light.
Pine bark extract
Pine bark extract is one of the common sources of procyanidins containing 65-75% of procyanidins. Pine bark extract is known for its natural antioxidant capacity which helps to regulate physiological function, enhance defensive capability, and reduce free radicals.
DHA for nutritional supplement is usually from fish oil or algae oil and algae oil has gradually taken the place of fish oil recently because it is vegetarian source and is low in heavy metal pollution. The supplements containing DHA usually provide health benefits such as vision protection, cognitive enhancement, inflammation relieves, or fetal developments.
Astaxanthin, found in red-colored aquatic organisms such as Haematococcus pluvialis, is classified as a xanthophyll and is with the similar structure to β-Carotene and xanthophyll. It is one of the most powerful natural antioxidant with free-radical scavenging capacity 10, 200, and 550 times higher than β-Carotene, xanthophyll, and vitamin E, respectively. Also, it is both water-soluble and lipid soluble and can pass through blood–brain barrier by passive diffusion and provide strong antioxidant activity for brain, nervous system, and eyes.