[Optical properties of tissues and organs in relation to laser rays with a wave length of 632.8 and 488 nm]

The authors measure the coefficient of attenuation of the equivalent depth of penetration in tissues and organs of rats of helium-neon and argon lasers with the generation wave length of 632.8 and 488 nm, respectively. Blood and organs with numerous capillaries proved to have the greatest capacity to absorb laser ray energy. With the reduction of the generation wave length there occurred a sharp partial elevation of the absorptive capacity of the blood. This permits to expect a greater blood photoreactivity to laser rays generating in the short wave part of the visible wave length range.