Background/aims Posterior capsule opacification (PCO) is the most frequent long-term complication after cataract surgery, caused by proliferation of residual lens epithelial cells (LECs). Metformin, a ...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.

If you have a Fire tablet or a smartphone, you can download other e-reading apps to beef up your library, but with the Kindle hardware, you're pretty much stuck to getting your content directly from ...