1. The system (1, 101) for processing the layer (3) of epithelial tissue, containing a reservoir (7, 107), containing during operation a certain amount of fluid, made with the possibility of the medium, when it is contained in the reservoir, in contact with the surface (5) a layer of epithelial tissue, a light source (9, 109) for generating a laser beam (11) for at least a given pulse duration, and an optical system (13, 113) for focusing the laser beam into the focal spot (15) and for arranging the focal spot in target position； while the spruce position of the focal spot is within the reservoir and within the medium when it is contained in the reservoir, and the size of the focal spot and the power of the generated laser beam are such that the laser beam has a power density in the focal spot that exceeds the characteristic threshold value for this medium, above which, for a given pulse duration, an event of laser-induced optical breakdown in the medium occurs； characterized in that, when operating, the target position is less than h m to 3 mm from the surface (5) of the layer (3) epithelial tissue.2. The system (1, 101) according to claim 1, in which the light source (9, 109) is configured to emit a long-wavelength laser beam (11) in the range of about 250-3000 nm, preferably in the range of about 800-1350 nm, most preferably in the range of about 900-1100 nm. 3. System (1, 101) according to claim 1, wherein during operation the target position is at a distance between 300 and 900 micrometers from the surface (5) of the layer (3) of epithelial tissue. 4. System (1, 101) according to claim 1, wherein the system is designed such that when using the event of laser-induced optical breakdown in the medium, it causes1. Система (1, 101) для обработки слоя (3) эпителиальной ткани, содержащаярезервуар (7, 107), содержащий при работе некоторое количество текучей среды, выполненный с предоставлением возможности среде, когда она содержится в резервуаре, соприкасаться с поверх
