METHOD FOR EXTRACTING CATARACT Russian patent published in 1998 - IPC

FIELD: medicine. SUBSTANCE: method involves applying laser radiation on operating needle tip directly to lens nucleus. Solid-state laser is used operating in medium infrared region of the spectrum at wavelength of 1900-2200 nm, pulse energy of 10-800 mJ, pulse frequency of 10-100 Hz, pulse duration of 50-500 mcs and quasi-rectangular pulse shape with 500-600 pulses in the whole radiation pulse train. Duration of laser exposure applied to lens nucleus is 3-3.5 min. Small splinters obtained are aspirated through operating portion of needle end piece to enable complete destruction and aspiration of lens nucleus fragments in hard cataract cases with minimum risk of pathological changes arisen in tissues surrounding the eye lens. EFFECT: enhanced effectiveness of treatment. 1 dwg