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de·or·sum·duc·tion(dē-ōr'sŭm-dŭk'shŭn), Avoid the misspelling/mispronunciation dorsumduction.
Rotation of one eye downward.
[L. deorsum, downward, + duco, to lead]
Farlex Partner Medical Dictionary © Farlex 2012
Downward rotation of an eye. It is accomplished by the inferior rectus and superior oblique muscles. It can be induced by using base-up prisms. Syn. infraduction; deorsumduction.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann