Scientists have taken a major step toward potentially reversing a common form of blindness.Researchers at the University College London (UCL)successfully transplanted light-sensitive photoreceptor cells from a synthetic retina that was grown from embryonic stem cells into night-blind mice. Photoreceptor cells are light sensitive nerve cells at the back of the eye. Many forms of blindness -- including age-related macular degeneration, retinitis pigmentosa and diabetes-related blindness -- are caused by the loss of these cells.
