I'm curious if you're familiar with the stromal stem cell research for regenerating deeper corneal tissues?

Research from University of Pittsburgh, successful on mice/rat models, was taken to India for human clinical trials with pretty great success healing severe chemical burns and scarring to the cornea. Here's video of them talking about their effort to get it FDA approved (will take 5 years), I linked it to where it shows the before and after results: https://youtu.be/q_obgXSeLaU?t=1586