Correct visual function requires a group of nutrients that need to be taken in sufficient amounts.
The deficiency of some of these nutrients can lead to increased degenerative processes in the retina, such as age-related macular degeneration or other visual disorders.
On the other hand the retina and the macula are subject to the oxidative action of UV radiation.
Over the course of years, the natural antioxidant defence system can lose its efficiency, increasing the production of harmful free radicals.