Trinity's Prof Jane Farrar (Ocular Genetics) spoke to RTÉ's Morning Ireland about this year's Nobel Prize in Physiology or Medicine. The winners, Karl Deisseroth, Peter Hegemann and Georg Nagel, developed optogenetics: using light to switch brain cells on and off. Prof Farrar on how it all began: "This trio were fascinated by simple little algae. They found the gene inside the algae that made them sensitive to light. They then took that gene and put it into brain cells." Researchers now use the method to study depression, dementia, deafness and more. For people with end-stage vision loss, it's already in clinical trials. #NobelPrize #TrinityResearch