Astaxanthin’s effect on the eyes: a. Astaxanthin has the effect of preventing ultraviolet radiation. It can prevent the aspect of chronic oxidative damage to the eyes from UV rays. Natural astaxanthin, as a kind of carotenoid, is a super antioxidant, and its antioxidant effect is more than one hundred times that of vitamin E. Taking astaxanthin can resist the production of free radicals in the body and can be an antioxidant, it is the antioxidant effect of astaxanthin that makes the eyes healthier. Second, astaxanthin can enhance the body’s immunity. Regular use of astaxanthin can reduce the incidence of allergic conjunctivitis, uveitis and other immune system diseases. Third, astaxanthin can be anti-inflammatory, anti-infection, has a significant antioxidant effect, can reduce eye damage caused by oxidation. Fourth, astaxanthin can effectively relieve eye fatigue. It can soothe the ciliary muscles of the eyes that suffer from long-term stress and significantly improve visual fatigue syndrome.