If you want to wear colored (circle) contact lenses, Firstly, you should make sure that you have more than eighteen years old. Colored (circle) contact lenses will cause great harm to your eyes. In particular, for the younger, the eyes have not been fully developed. Poor quality may make you suffer from some diseases . Also, if you wear for a long time, you may feel pain and fatigue. On the other hand, colored (circle) contact lenses will make the eyes look more beautiful. So, If you really want to wear, you must pay attention to develop good habits with the eyes.