In general, it seems no changes of eye shape after wearing contact lenses. However, as a matter of fact, it is possible to change your eye shape more or less because of wearing contact lenses for a long time. The scientific research shows that, long-term use of contact lenses has been shown to alter the following in the cornea, epithelial oxygen uptake, epithelial thickness, stromal thickness, and corneal endothelial morphology. All of these intrinsic transformation will give rise to the change of your eye shape in the end. In addition, long-term use of contact lenses can also lead to many problems, such as dry eyes, pink eyes as well as infection and so on. Therefore, it's better for you to control the wearing time in consideration of your eyes.