Cover test to check eye alignment. During a cover test, your eye doctor will have you focus on a small object across the room and then he or she will cover each of your eyes alternately while you stare at the target.
They are mostly found in plant foods, such as nuts and oil. They include unsaturated fats -- monounsaturated and polyunsaturated -- and omega-3 and omega-6 fatty acids. Omega-3 fatty acids, which are found in fish, walnuts, and flaxseed oil, are thought to reduce the risk of heart disease. For this reason, three servings of fish a week are recommended. Types of Healthy Fats. 1  Monounsaturated fat is in olive and canola oil, avocados, nuts, and all-natural peanut butter.
Dietary Sources. Flaxseed oil comes from the seed of the flax plant. It contains 50 to 60% omega-3 fatty acids in the form of alpha-linolenic acid (ALA). That is more than is contained in fish oil.But the body is not very efficient at converting ALA into the omega-3 fatty acids found in fish oils.laxseed oil contains the essential fatty acid alpha-linolenic acid (ALA), which the body converts into eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), which is the omega-3 fatty acids found in fish oil. Some researchers think flaxseed oil might have some of the same benefits as fish oil.