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A Simple Portable Dark-Field Microscope

A Simple Portable Dark-Field Microscope Abstract There is still a need in dermatology for dark-field examination of skin lesions. Unless a separate microscope is set up for this, there is often difficulty getting such examinations even by the dermatologists. Our experience with the staining of spirochetes has shown inconstant results. Our preferred technique at present is still the use of fountain-pen ink, developed in the department by Emura.1 For the past year, for routine dark-field examinations we have been using the McArthur microscope.2,3 This special microscope was devised originally for field work in tropical medicine. It has an original design based on a prismatic system. It measures only 4×2½×2 in. and weighs only 18 oz. For dark-field examination we use the dark-field condenser, precentered and prefocused with a built-in electric illuminator. Material is taken in the usual manner from an active lesion. Immediately this slide is put on this References 1. Emura, E. T.: Rapid and Easy Method for Staining Spirochetes with Fountain Pen Ink , A. M. A. Arch. Dermat. & Syph. 67:210 ( (Feb.) ) 1953. 2. McArthur, J.: Personal communication to the authors. 3. McArthur, J.: A New Concept in Microscope Design for Tropical Medicine , Am. J. Trop. Med. 7:382 ( (July) ) 1958. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png A.M.A. Archives of Dermatology American Medical Association

A Simple Portable Dark-Field Microscope

A.M.A. Archives of Dermatology , Volume 79 (5) – May 1, 1959

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Publisher
American Medical Association
Copyright
Copyright © 1959 American Medical Association. All Rights Reserved.
ISSN
0096-5359
DOI
10.1001/archderm.1959.01560170087014
Publisher site
See Article on Publisher Site

Abstract

Abstract There is still a need in dermatology for dark-field examination of skin lesions. Unless a separate microscope is set up for this, there is often difficulty getting such examinations even by the dermatologists. Our experience with the staining of spirochetes has shown inconstant results. Our preferred technique at present is still the use of fountain-pen ink, developed in the department by Emura.1 For the past year, for routine dark-field examinations we have been using the McArthur microscope.2,3 This special microscope was devised originally for field work in tropical medicine. It has an original design based on a prismatic system. It measures only 4×2½×2 in. and weighs only 18 oz. For dark-field examination we use the dark-field condenser, precentered and prefocused with a built-in electric illuminator. Material is taken in the usual manner from an active lesion. Immediately this slide is put on this References 1. Emura, E. T.: Rapid and Easy Method for Staining Spirochetes with Fountain Pen Ink , A. M. A. Arch. Dermat. & Syph. 67:210 ( (Feb.) ) 1953. 2. McArthur, J.: Personal communication to the authors. 3. McArthur, J.: A New Concept in Microscope Design for Tropical Medicine , Am. J. Trop. Med. 7:382 ( (July) ) 1958.

Journal

A.M.A. Archives of DermatologyAmerican Medical Association

Published: May 1, 1959

References