In the August 1932 issue of the Archives I described an illuminated loupe.1 In this article I stated :
One of the difficulties confronting the ophthalmologist in the use of the monocular loupe is in obtaining a sufficient amount of condensed light at a suitable focal distance. Besides the fact that one hand is occupied in holding the condensing lens, the source of the illumination may not always be close or conveniently at hand. In order to overcome these shortcomings it occurred to me that if the light source and condenser could be combined as a unit and this in turn attached or fastened to the loupe, a satisfactory and reliable source of illumination might be effected to assist the operator in his observations.
I also described how this crude model could be used as a hand slit lamp.
In designing a slit lamp for hand use, the problem was
Krimsky E. A FEATHERWEIGHT SLIT LAMP. Arch Ophthalmol. 1939;21(6):1033–1035. doi:10.1001/archopht.1939.00860060143012
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