Damien Kilgannon has gone with his gut. In recent weeks, the engineer and co-founder of Sula Health launched its new light-therapy glasses and app, catering to the jet-lagged, shift workers, and assorted insomniacs. The product has been in the works for about three years. It was gearing up to raise seed funding in January when Covid-19 struck, and the round was suspended. Now, Kilgannon has decided to launch the product mid-pandemic. “There were angel investors already interested in the business and committed to working with us,” says Kilgannon. One of these was former Aer Lingus CEO Dermot Mannion, who has…