This paper presents a description of methods and apparatus for optical
action on blood outside the organism in a wide spectral range, from U
V (lambda=254 nm) to visible (lambda=632.8 nm). Optical action on bloo
d is effective not only for the treatment but also for the prophylaxis
of a number of diseases in therapeutic, surgical, gynecological, infe
ction, and other clinics, as well as for strengthening the action of i
ntravenously introduced drugs. The apparatus can be used not only unde
r stationary conditions, but also under ambulatory conditions. It can
be used in veterinary science for prophylaxis and treatment of large h
orned cattle, horses, sheep, swine, cats, and dogs.