Summarize this article in one sentence.
Gently place it in your hand. The part of the lens that touches your eye should be face up. Your lens should look like a bowl. Make sure the solution gets on both sides of the lens. Allow some of the solution to drain away before you continue cleaning the lens.  If you’re wearing rigid contact lenses, make sure you purchase contact solution specifically formulated for these lenses. Read the label thoroughly. Ask your doctor which solution is best for you. Always use contact solution to clean your lenses. Never, ever use water or saliva to clean your lenses. This can cause a serious infection.  Do not attempt to clean daily contacts, which are only meant to be worn once. You should throw these away, as wearing them more than once increases your risk of infection. Lightly move the lens back and forth on your palm. There should be contact solution both on your hand and on the lens.  Some solutions are labeled as “no-rub” solutions. However, rubbing always gets your lenses cleaner, so it’s best to do it regardless of which solution brand you use. If your lens is very dirty, you might flip it over and rub both sides. Spray the lens with contact solution to remove any remaining grime. Make sure the solution treats both sides of the lens.  If you see any visible dirt or grime left on the lens, repeat these steps to try to clean the lens. If you cannot get the lens clean, discard it. You can follow the same steps to clean your lens after it falls out or feels dirty, as long as you only use saline solution. Instead of putting your lens away, put it back in your eye.
Place your contact lens in the palm of your hand. Spray contact solution on the lens. Use the pad of your finger to gently rub your contact lens. Rinse the lens once more before putting it in your case.