A group of scientists from the American company Second Sight issued permits for testing a new implant. Experts are sure that their development will help restore lost vision in people. Several volunteers will take part in the tests. Two years ago, animal tests gave good results. The chip will be implanted in the cerebral cortex filled with gray matter. By acting on neurons, he will regain the ability to distinguish between light, silhouettes or completely restore the vision lost due to diseases provoked in particular by diabetes mellitus. Another project of the company, Argus II, is already taking root in medical practice. Glasses equipped with a video camera transmit a signal to the processor and to the electrodes of the artificial retina, which are implanted in the region of the optic nerve.