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.
Polyunsaturated fats can be further broken down into omega-6 and omega-3 fats. Sources of omega-3 polyunsaturated fats include soybean oil, canola oil, flaxseed, walnuts and fatty fish, such as salmon, trout and herring.hese fats are found mainly in animal foods such as beef, pork, lamb, butter, milk and cheeses. Certain plant sources, such as coconut, coconut oil, cocoa butter and palm oil, also contain saturated fat. Harvard School of Public Health has ranked the top sources of saturated fat in the American diet.