|
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.
|
