Beta-carotene is found especially in carrots as well as in most yellow-orange and green fruit and vegetables, such as green cabbage, spinach, broccoli, lamb's lettuce, paprika or apricots. Retinol (vitamin
useful not only for the blind and visually impaired but also for people with colour blindness or red-green vision deficiency: With ColorSay the surroundings are scanned and the colours are expressed in spoken
