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A SYSTEM OF REMOTE CONTROL APPLIED TO ASTIGMATIC DIALS
COMMANDER DAWSON A. MILLS, MC
Arch Ophthal. 1950;43(5):912-913.
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| Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings. |
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Subjective testing for astigmatism, accomplished by dials of the type made popular by Lancaster1 and Regan,2 is widely practiced. However, considerable effort is required in the selection of the proper axis on dial 1 and in the adjustment of dial 2 to that axis. Hence it seems appropriate to present a suitable method whereby these maneuvers may be accomplished by remote control.
Only recently, Weston3 described a method which is in part very similar to such a procedure. However, he used only a single astigmatic cross. Other types have been employed, utilizing principally mechanical connections.
The system to be presented consists of two large dials, each of which is constructed on a 30 inch (76 cm.) square, of thin aluminun, and the control box. Dial 1 consists of 1/4 inch (6 mm.) black tapes, each 10 inches (25 cm.) long, arranged radially at 10 degree intervals
. . . [Full Text PDF of this Article]
Author Affiliations
U.S.N.
Footnotes
This article has been released for publication by the Division of Publications of the Bureau of Medicine and Surgery of the United States Navy. The opinions and views set forth in this article are those of the writer and are not to be construed as reflecting the policies of the Navy Department.
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