The pigments of Marine Phytoplankton are continuously and mainly involved in light-harvesting processes. Some carotenoids (pigments) are therefore essential parts of the light-harvesting parts of the eye, namely the retina (51). These substances support, and can potentially improve eyesight through protection against harmful light and oxygen (52). These pigments protect these tissues and have the potential to prevent cataract, diabetic retinopathy and age-related degeneration of the retina. Other carotenoids act as structural stabilizers for protein assembly and can have a supporting role in photoprotection against light damage (53).