Green vegetables are good for your eyes, bones and teeth, and their vitamin K content helps your blood to clot properly. A 2-cup serving of raw spinach provides 290 of the 90 to 120 micrograms of vitamin K you need each day. These foods' antioxidant vitamins, particularly vitamins C and E, may lower your risk of chronic diseases. They provide the phytonutrients lutein and zeaxanthin, which may protect you from vision loss due to eye diseases such as macular degeneration, according to North Dakota State University.