With the increase in life expectancy, some eye diseases and afflictions such as cataract or age-related macular degeneration (AMD) are unquestionably rapidly on the increase. Today the number of people affected by cataract is estimated at 250 million worldwide, with 100 million suffering from AMD, and these figures are set to double over the next 30 years Fig. 1 Within this context, the importance of preventing eye diseases becomes clear and the main objective is to minimise the risk of diseases occurring by taking direct action on the causes.