Woman in Canada has tooth implanted in eye to regain sight

In Canada, a woman had a tooth implanted in her eye so she could see again. Seventy-five-year-old Gail Lane had been completely blind for many years due to an autoimmune disease that left scars on the corneas of her eyes. To restore her vision, she underwent the rarest of surgeries, osteo-odonto keratoprosthesis (literally 'tooth in eye'). The procedure is extremely peculiar: The patient had her own tooth extracted; this tooth was implanted into her cheek for several months to allow connective tissue to grow around it; then a hole was drilled into the tooth in which a tiny optical lens was inserted; the resulting bio-implant was transplanted into the woman's eye, replacing her damaged cornea. After the surgery, vision began to gradually return: Lane initially saw light, then movement, followed by outlines and colors. Months later, she was able to make out people's faces, including her husband's face, which she had never seen before.