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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]
infraduction/in·fra·duc·tion/ (-duk´shun) downward rotation of an eye around its horizontal axis.
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.