Another topic I have been researching is prosthetics. Prosthetics are widely used today to help many people. They can be used for people who have lost a limb and also for people who need them for cosmetic reasons such as artificial eyes. These devices may be surgically implanted or they can be used externally. Prosthetics have also been created by a 3D printer. This new way of developing prosthetics is still not able to be used by the general public but in the near future it may be possible to cheaply created these very expensive pieces of equipment.