The eyes are more than just the window to the soul; they can be the window to the body. They have no immune cells to react negatively to implants, which makes them particularly interesting for cell therapies. And, as an added bonus, eyes are transparent, which allows researchers to easily track what’s going on with any implants. “The eye is immune-privileged,” author Anna Herland explains. With that in mind, Herland and colleagues at the KTH Royal Institute of Technology and Karolinska Institutet have developed a micro-implant that can be used to deliver cell treatments that treat diabetes. Ey…