FIELD: medicine.
SUBSTANCE: two-staged laser exposure covers a trabecular region. The first stage involves incising the trabecula with a pulse neodymium YAG-laser at wavelength 1064 nm with pulses 6-36 mWt. The exposure is performed in a projection of one or more emissary veins until a Schlemm's canal starts bleeding. The second stage involves the exposure to a coagulation neodymium YAG-laser at wavelength 532 nm, spot diameter 50 mcm and exposure 0.2 sec. The trabecular tissue is coagulated along an inner wall of the Schlemm's canal until it corrugates along the full length of the trabecule in number of 90-120 coagulates.
EFFECT: fast intraocular pressure reduction, high hypotension effect and stable maintenance of intraocular pressure at the level of norm by de-blocking a fluid flow in the emissary veins and Schlemm's canal.
3 dwg, 3 ex
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