PHOTOGRAPHIC DETERMINATION OF THE ROTATIONAL STATE OF THE EYE USING MATRICES*

ABSTRACT A method is described which completely determines the rotational state of the eye in terms of three spherical angles or in terms of an axis of rotation and an extent of rotation. The experimental method consists of photographing two distinct markers on the globe through a telephoto lens. The data transformation relies on the fact that the rotation of a rigid body can be described by an orthogonal matrix and that the resultant rotation of successive rotations can be represented by the product of such matrices.