The Keeler panoramic prismatic loupe.
Panoramic prismatic loupes are optically superior to standard binocular Galilean loupes and are rivaled only by operating microscopes. Several companies offer these loupes. The Keeler loupe (Keeler Instruments, Inc, Broomall, PA) offers the most versatility, with seven different magnifications and three different working distances. In addition, all of the lenses are interchangeable on the same lightweight frame.
Department of Dermatology and Cutaneous Surgery, St. Paul-Ramsey Medical Center, Minnesota 55101-2595.
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D003880:Dermatology / Q000295:instrumentation*; D007909:Lenses; D013525:Surgical Instruments