There is for an example an interesting market in medical radiology imaging. This is a profession like many other who is always looking for ways to reduce eye st

There is for an example an interesting market in medical radiology imaging. This is a profession like many other who is always looking for ways to reduce eye strain. they see it as an occupational hazard: http://europepmc.org/article/PMC/5449879 http://europepmc.org/article/PMC/5449879 This is relevant for pretty much any knowledge worker job as well.