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In the USA, there's a trial that is made with 18 patients with vision problems in the retina. This patients have been treated with stem cells to regenerate tissue of the retina, which is the part of the eye where images are projected. The test was a success: 10 of the 18 patients significantly improved their vision, 7 of the 18 improved slightly or remained stable and only one of them lost vision.

One of these patients is a man of 75 who was blind in one eye and is dedicated to breeding horses. After a month of treatment, improved both the vision returned to ride a horse and was able to detect objects that were in the way. His eye went from having no vision to be between 20-40% vision.

This healing technique was being investigated during a lot of time, but had not done ever until  now because it can be rejected or create tumors. Steven Schwartz, the author of the Work says that if all goes well, in 2020 this technique will be marketed worldwide and it could cure other diseases that now are incurable like Alzheimer's, Parkinson's and diabetes.

In my opinion, I don't understand why people are against the stem cells. I think it can be the research of the decade. If they could research more, they maybe could cure cancer