This is really interesting invention: a foldable microscope with integrated optics and illumination system. The slide can also be moved in two dimensions and it is possible to focus. I wonder when these microscopes become available. They are not only interesting for diagnosis of malaria but also for schools and in education. The microscope is, essentially, a modification of van Leeuvenhoek’s single lens microscope. It uses a spherical lens. It should not be too difficult to build one from a printable plan.