Retinitis pigmentosa (RP) is a genetic disease that gradually destroys the light sensing nerve cells, called photoreceptors, located in the retina at the back of the eye. UC Irvine professor Henry Klassen describes a CIRM-funded project that aims to begin a stem cell-based clinical trial for RP in early 2015. Rosalinda and German Barrero also speak about the devastating impact of RP on their lives and their excitement about the trial. (#29233)