This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
This improved eye speculum is made entirely of brass and is, therefore, non-magnetic. It is composed of only two parts, which are easily detached for cleansing. It has neither spring, setscrew, hinge or ratchet. It is very light, weighing less than three drams. It is introduced easily without changing hands, locking itself automatically.
It can be removed very quickly without the resistance of a spring to overcome, a setscrew to loosen or the fear that it may slip from the hand. It takes but a moment to increase or to diminish the pressure on the lids. It has the advantage of the original Mellinger's speculum in that the blades open parallel.
The blades are solid and conform to the curve of the lid margin. The pressure on the sensitive lid, therefore, is equally distributed, reducing the distress and reflex spasm to a minimum. The under surfaces of the blades are
MONOSMITH OB. A NEW EYE SPECULUM.. JAMA. 1907;XLVIII(9):795. doi:10.1001/jama.1907.25220350053002b