LOL, pls no worries. If wearing 3D glasses is harmful for our eyes, I think the 3d movies will not be so popular all over the world. What matters is that how often you wear 3D glasses. If you wear 3D glasses too often, your eyes are easily getting dry. Besides, you know, the glasses will also release some radiation while wearing 3D glasses, as a matter of the fact; you will know that you cannot wear 3D glasses when you are pregnant. All in all, wearing 3D glasses will not hurt your eyes, however, if you wear too much, there are more possibilities that our eyes are getting hurt, especially the dry eyes. Then, do remember that you cannot wear 3D glasses outside when the sunshine is nice. Hope my personal suggestion will help you with your question and doubt.