TOPSHOT - A doctor tests an eye implant on Denise Vicentin, who lost her right eye and part of her jaw to cancer, in Sao Paulo, Brazil, on November 1, 2019. - Researchers at Paulista University are employing smartphones and 3D printing to create digital facial impressions to make silicone prostheses. The team specializes in maxillofacial prosthetics, a branch of dentistry focused on treating people disfigured by birth defects, disease or trauma. The pioneering method has slashed costs and halved production times. (Photo by Miguel SCHINCARIOL / AFP)