Stem Cell Method Allows Blind Mice to See Again

Stem Cell Method Allows Blind Mice to See Again

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Blind mice can see again, after Oxford University researchers transplanted developing cells into their eyes and found they could re-form the entire light-sensitive layer of the retina. Videos show the nocturnal mice, which once didn’t notice the difference between light and dark at all, now run from the light and prefer to be in the dark — just like mice with normal vision. The researchers say the approach has relevance for treating patients with retinitis pigmentosa, a condition in which the light-sensing cells in the retina gradually die leading to progressive blindness.

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