The most powerful trade associations represent large industries such as. pharmaceutical. Pharmaceutical industry is usually huge as it involves numerous different processes and employs thousands of people in just one country.
Eye Vitamins for Macular Degeneration. Most people with macular degeneration do not need vitamins. Only certain individuals may gain a benefit from taking eye vitamins, but these are a particular subset of all patients with macular degeneration.
Beta-carotene. 1  Eye benefits of beta-carotene: When taken in combination with zinc and vitamins C and E, beta-carotene may reduce the progression of macular degeneration. 2  Food sources: Carrots, sweet potatoes, spinach, kale, butternut squash. 3  RDA: None (most supplements contain 5,000 to 25,000 IU).