Major advances characterize the Generation-V dual-Purkinje-image (DPI) eyetracker compared with the Generation-III version previously described. These advances include a large reduction in size, major improvements in frequency response and noise level, automatic alignment to a subject, and automatic adjustment for different separation between the visual and optic axes, which can vary considerably from subject to subject. In a number of applications described in the paper, the eyetracker is coupled with other highly specialized optical devices. These applications include accurately stabilizing an image on a subject's retina; accurately simulating a visually dead retinal region (i.e., a scotoma) of arbitrary shape, size, and position; and, for clinical purposes, stabilizing the position of a laser coagulator beam on a patient's retina so that the point of contact is unaffected by the patient's own eye movements.
© 1985 Optical Society of America
Original Manuscript: September 10, 1984
Published: February 15, 1985
Hewitt D. Crane and Carroll M. Steele, "Generation-V dual-Purkinje-image eyetracker," Appl. Opt. 24, 527-537 (1985)