TV-controlled laser electro-optic system for iridopuncture

It is a problem of laser eye-microsurgery and a proposed new method of laser iridopuncture to aff ect the predetermined points of an incessantly moving eye. Solving the problem, we aligned a sharp "laser needle" with a TV system and slaved it electrooptically f or being always centred in a tracking window. Preliminary image processing includes histogram normalization resulting in the possibility of a f ixed threshold selection for binary quantization of an image. TV correlation-tracking realizes a minimum absolute diff erence algorithm with the size of a tracking window 16x16 pixels and the field of search 8 pixels greater in orthogonal directions. The laser beam is Bragg-diff racted on a moving sound wave in a Te02 crystal. Frequency synthesizer controls the deflection of a laser beam and operates in the range from 50 to 100 MHz quantized in 0.1 MHz steps. Maximal switch time is 1 ms. Investigations on animals and treatment of human volunteers were made. Patients with tachyarrhythmia, stomac and duodenum ulcer, chronic pancreatitis, gall­ bladder diskinesy, bronchial asthma were included into the experimental group. Laser iridopuncture, acting as a stabilizing factor improving the status of injured membranes of blood cells, giving the normalization of RR­ intervals within the 40%-limits, and a perfect healing of ulcer af ter 10-12 procedures, showed to be a perspective non-invasive method of treatment f or human diseases.