JAMA 100 Years Ago Section Editor: Jennifer
Reiling, Editorial Assistant.
BY J. W. KIME, M.D.FORT DODGE, IOWA.
I have devised and am now using, in the treatment of cases by means
of concentrated light, a reflector which is so constructed that the direct
rays of the sun falling on it are focussed at a distance of eight feet, on
an area six inches in diameter. Thus a light is produced equal in intensity
to twenty times that of direct sunlight, and covering an area of twenty-eight
square inches. As the actinic rays of the sun are desired rather than the
heat rays, blue glass is placed in front of the reflector, which permits of
the passage of the light in nearly its full strength, but excludes a large
percentage of the heat rays. The reflector is mounted on a metal stand which
permits of motion in all directions. The light from this reflector is as powerful
as it is possible to make use of on account of the accompanying heat.
INSTRUMENT FOR USE IN PHOTOTHERAPY.. JAMA. 2000;283(18):2365. doi:10.1001/jama.283.18.2365