Research published in the Journal of Neuroscience, out of the Oregon Health & Science University shows that nerve cell in the eye requires vitamin C to work properly. The retina of the eye, which is part of the central nervous system, needs to be bathed in vitamin C to function correctly. This could have implications for glaucoma which is caused by the dysfunction of nerve cells in the retina. It is possible that a vitamin C rich diet could be protective of the retina and prevent deterioration.
Foods high in vitamin C include: cabbage, chili peppers, green leafy vegetables, peppers, potatoes, tomatoes, acerola, grapefruit, guava, kiwis, mango, orange, strawberries and watermelon.