Nanobatteries Power Artificial Eyes
Roland Piquepaille writes "A new U.S. research center, the National Center for Design of Biomimetic Nanoconductors, has been opened to promote new ideas in the field of nanomedicine. For example, a team of researchers at Sandia National Laboratories (SNL) is developing a nano-size battery to be implanted in the eye to power artificial retina. But this center will also design and build 'nanomedical devices based on natural and synthetic ion transporters -- proteins that control ion motion across the membranes of every living cell.'"
The general press and general public really do not bother to focus on concerns such as the ones you bring up. I'm glad you have the ability to think critically, but do not judge everything about this research from this press release. There are thousands of primary articles from scientists dedicated to understanding how to better implant medical devices. Look for articles in http://www.ncbi.nlm.nih.gov/ under pubmed -- search for terms like "implant", "rejection", "immune response", and other such keywords if you want to actually know what more about how science is dealing with this very issue. Such research has already made possible the ability to implant pacemakers, stints, artifical joints, steel plates. It is only a matter of time -- in my professional opinion, about 3-6 years until phase I clinical tests on fabricated retinas begins. Phase I/II are specifically designed to test the safety of medical drugs and devices to address the concerns you bring up about rejection. I think it could be up to 10 years until phase III -- the actual efficacy trial. Then we'll know how people whose vision has degenerated can benefit from this treatment. But we will certainly know before then whether or not animal models will respond to this treatment.