<p>Scaling up innovation is rarely as simple as investing in a company. The best social innovations aren't companies rather they are social movements, coalitions co-created by businesses, social sector organisations and governments working together.</p><p>But how do you fund and scale up a movement?</p><p>The remarkable story of Aravind Eye Hospitals offers some insights. Aravind is a chain of eye hospitals founded in India that pioneered a new way of delivering ultra-low cost cataract surgery for the rural poor.</p><p>In 1992, a social entrepreneur named David Green, who had been working with Aravind to develop their social business model, teamed up with Aravind and the Seva Foundation to set up a company to make the lenses needed for cataract surgery.</p><p><a href="http://www.forbes.com/sites/ashoka/2014/03/31/how-philanthropists-and-investors-can-work-together-to-create-social-change/">Keep reading...</a></p>