The complex procedure involves extracting a patient’s canine tooth, adding a plastic optical lens to it and surgically ...

Take a look at this circle. Do you see a number in the dots? It's a 7. How about in this one? It's at 13. If you don't see a number, it may be a symptom of colorblindness. About these condition's ...

Some types of blindness are curable. Anita and Sonia were both born blind, in poor villages in India. They had their blindness cured with a quick surgery from the nonprofit 20/20/20, which aims to ...

This story appears in the June 2017 issue of National Geographic magazine. To appreciate a painting, we’re taught to look for color, composition, and light. But how can a painting be savored by ...