. Radiotherapy and phototherapy : including radium and high-frequency currents, their medical and surgical applications in diagnosis and treatment ; for students and practitioners . employing the Betts lamp a number of observers,including Wilson, have seen good eftects upon the healingof ulcers, and as a stimulating application after operationto hasten repair. Therapy. Asthma. Two cases of asthma were believedto have been aborted in Minins service. Lupus. The reflex action produced by blue-light expo-sures Kaiser^ believes has a powerful stimulating effect onmetabolism in lupus and lupus eryth
. Radiotherapy and phototherapy : including radium and high-frequency currents, their medical and surgical applications in diagnosis and treatment ; for students and practitioners . employing the Betts lamp a number of observers,including Wilson, have seen good eftects upon the healingof ulcers, and as a stimulating application after operationto hasten repair. Therapy. Asthma. Two cases of asthma were believedto have been aborted in Minins service. Lupus. The reflex action produced by blue-light expo-sures Kaiser^ believes has a powerful stimulating effect onmetabolism in lupus and lupus erythematosus. ^ New Zealand Mediral Journal, ^March, 1901. ^ Loc. cit. PHO TO THERA PE U TICS 447 The influence of these visible chemical rays is directlyproportional to the distance and intensity of the light penetrates blood-filled tissues and favors absorp-tion. Pain can be relieved, and it is said actual anaesthesiaproduced by concentrating the light. Colquhoun has devised a method for the employmentof the blue light in lupus and other diseases. The patientis seated with the back to a window, the sunlight fromwhich is reflected from a mirror placed at some distance. Minins lamp. in front of the patient. The reflected rays are focusedthrough a biconvex lens of eight to twelve inches focallength. The rays pass through a bottle containing anaqueous solution of ammoniated sulphate of copper. By theaid of a hand-mirror the patient keeps the diseased areawithin the focus of the concentrated beam of blue sittings are of an hours duration. Neuralgia. Arienzo got good results in six cases, andfinds that concentrated blue rays have marked analgesic New Zealand Medical Journal, March, 1901. 448 LIGHT qualities, believing that they penetrate to the deeper tissues,and have an action upon the circulation of the efferent andafferent bloodvessels of the nerve. The apparatus employed consisted of a bell-shapedreflector sufficient to converge all the light from a thirty-candl
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