The first great advances in science and in particular in the biological sciences are due in part to the invention of the optical microscope, when at the end of the seventeenth century Anton van Leeuwenhoek, carving lenses, was able to appreciate the world that due to its small size was impossible see with the naked eye: the microscopic world.
Fortunately, years later, thanks to the invention of the optical microscope, man was able to have evidence of the great world that existed beyond the lenses and thus discover an inorganic universe, such as table salt crystals or oxalate salts that They are found in the urine and whose accumulation is the cause of kidney stones. Likewise, he was able to observe the slow movements of an intestinal parasite, the amoeba, which also helped to remove the blindfold of obscurantism and thus take the first steps in modern science. One more fact, among so many remarkable ones, was that thanks to the optical microscope some chemists and doctors, such as Louis Pasteur and Robert Koch, were able to study the diseases that besieged humanity.
Currently there are different types of microscopes, the luminous ones are those that use visible light.