The lenses keep ripping can be resulted from many reasons. Sometimes, eye dryness can make the lenses more prone to rip. So, another daily lens with more of a moistener are recommoned , which will help immensely. Using lubricated drops before wearing them is also great for you. What is more, your finger nails will grow too long to rip them. It is found that the contacts will keep sliding if your finger have a tiny amount of perfume residue. It is worth mentioning that washing your hands thoroughly with soap before your wear your lenses. Furthermore, rub your eyes several times to see if anything comes out. Some of them are not irritable so that you can not definitely feel it. Well, practice makes perfect. Have a good day.