Probably several years. They've only had a small scale human trial of 12 patients so far, and a larger scale human trial is likely to take some time to organize, then of course the post-trial monitoring for possible side effects will need to continue for some time, probably 24-36 months.

Everyone hopes of course that these patients will enjoy permanently repaired vision, but there's no way to know for a long time. Also, stem cells have an unfortunate tendency to turn into cancer. The field is really still in its infancy, but the potential is enormous.

When they figure out how to mark it up 20,000%.