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The employment of the binocular loupe, illustrated, has been of such service to me that this note is inserted with the idea that it may prove of value to other surgeons.
The illustration shows the frame with the magnifying lenses projected before it. In the frame may be inserted lenses that are demanded by the individual surgeon's eyes, and the magnifying lenses advanced before these may be obtained with the magnification of either two or three times normal size.
The focal range of the lenses is such that there is a safe distance between the lenses and the operative field, so that contamination of the field is avoided.
The lenses have been of particular value to me in searching specimens of thyroid removed for possible parathyroids; these parathyroids to be immediately implanted, as I have suggested, at the time of operation.
The lenses have also been of distinct value in
Lahey FH. A BINOCULAR LOUPE. JAMA. 1930;95(26):1975. doi:10.1001/jama.1930.27210260001007a
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