For the first time, an embryonic stem cell study was documented in a scientific study. The study involved two women with untreatable eye diseases who were injected with embryonic stem cells. Both women claimed to have noticed dramatic improvements in their vision after the injection. Steven Schwartz, chief of UCLA’s Jules Stein Eye Institute’s retina division, said, “it’s nowhere near a treatment for vision loss, but it's a signal that embryonic stem-cell based strategies may work." Schwartz said he is “thrilled and excited” by the results of this study, but admits the results are preliminary, the sample size is small, it is difficult to measure vision improvements for low-vision patients. The study, published in, The Lancet, states the stem cells were derived from an embryo and injected into the retinal tissue. The patients originally had to take anti-rejection drugs so the eyes would not reject the foreign tissue.
