Yes, really, rubbing your eyes can cause the eyelashes fall out. When you rub your eyes, your hand put its strength on your eyes, and it will drag your eyelashes till it is out from the eyelids. Normally, the eyelids have its growth periods as the leaf from the tree, it will fall down when it grows old. However, the outer strength exert will pull the immature eyelashes and hurt them, and it will fall out before the old periods. Moreover, this movement of rubbing is actually not so good to your eyes as it will bring some virus get into your eyes to make it infection of pink eyes. It will also hurt the subtle eyes muscle. So take care of your eyes and never rub your eyes with strength.