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Development and clinical research of the He-Ne laser medical instrument with quasi-single beam in two ways

Much research has been made into low-powered He-Ne laser radiating treatment. Our He-Ne laser treating instrument can transmit double beams in two ways, which is quite different from the old-typed He-Ne laser instrument having one single beam in one way. The power of 250mm-laser totals 2.8mw-3. 5mw, nearing the theoretical value. The invention not only increases the laser radiating power, with convenient treatment of patients, but also eliminates the technical prejudice against radiating beams in one way. Since 1994, three two-way He-Ne laser instruments have been used in the clinical experiments on the ophthalmology in Dalian Railway Hospital. After concentrated treatment of the period of 3 winter and 3 summer vacations, 951 near-sighted eyes in 679 cases of near-sightedness of teenagers were treated. The recent total efficiency is 94.4 percent. The efficiency investigated after half a year is up to 60 percent.