Think of a doctors "dealing with wounded patients and right there in their field of vision, if they're trying to do any kind of procedure, they'll have step-by-step instructions walking them through it. Don't have to call anyone, it's just there. That kind of thing, where we can view the Internet overlaid on the real world is transformative in a lot of different areas," he said.
Read more: http://www.businessinsider.com/marc-andreessen-describes-how-google-glass-will-revolutionize-health-care-2013-4#ixzz2RwwnDR7y
Unfortunately this interview has only a single example but finally it is one that relates to business, healthcare in this case. Additional examples are provided, and they have mostly to do with regards to customer support, or instant help.