Generally speaking, contact lenses do not so easily fall out of your eyes if you have had the most suitable contact lenses for you. The following reasons may cause your contact lenses easily fall out of your eyes. First, you need to assure that you are not so sensible to the material of the contact lenses by asking help for the doctors. Then, you should have a pair of contact lenses that are the most suitable for you, like the size of the contact lenses, good diaphaneity and the surface of the contact lenses, all those are important components to know whether your contact lenses easily fall out of your eyes. Third, your contact lenses must be kept clean and avoid bacteria pollution. Make sure your contact lenses are clean before you wear it. If your contact lenses easily fall out of your eyes, having another pair of contact lenses may make you better, having enough time to sleep and having a break after seeing the things with your eyes for a long time, having the eyedrops , all those can make you feel better.