cyclorotation

English

Etymology

From cyclo- +‎ rotation.

Noun

cyclorotation (plural cyclorotations)

1. (medicine) Torsional movement of the eye (rotational movement that does not shift the centre of the pupil).
   • 1993, Timothy Lenoir, Hermann Von Helmholtz and the Foundations of Nineteenth-Century Science, University of California Press, page 151:

     In measuring eye position, for instance, both Fick and Wundt had adopted procedures which did not treat the co-ordinate frame of the primary position as fundamental. Rather, they related cyclorotations to the visual plane—which is variable—instead of to the horizontal in the primary position.

   • 1995, Ian P. Howard, Brian J. Rogers, Binocular Vision and Stereopsis, Oxford University Press, page 269:

     The images of horizontal lines in the upper visual field acquire a gradient of cyclorotation with one sign, and those in the lower visual field acquire a gradient of cyclorotation with the opposite sign, as shown in Figure 7.8b.

   • 2008, Guang-ming Dai, Wavefront Optics for Vision Correction, Society of Photo-Optical Instrumentation Engineers, page 192:

     Also shown are the coefficients of the residual wavefronts assuming a partial correction of the original wavefront due to a cyclorotation of the eye. To estimate how much error may induce due to the cyclorotation of the eye, the residual RMS wavefront error as well as the residual high-order RMS wavefront error for each of the rotation angles is shown.