Eye tracking white sclera (limbus tracking). It presents another challenge for vertical eye movements due to obstruction of eyelids. Eye-tracking setups vary greatly: some are head-mounted, some require the head to be stable (for example, with a chin rest), and some function remotely and automatically track the head during motion. Most use a sampling rate of at least 30 Hz. Although 50/60 Hz is more common, today many video-based eye trackers run at 240, 350 or even 1000/1250 Hz, speeds needed in order to capture fixational eye movements or correctly measure saccade dynamics. Eye movements are typically divided into fixations and saccades
The Eye of the World The Eye of the World The Eye of the World is a fantasy novel by American writer Robert Jordan, the first book of "The Wheel of Time" series. It was published by Tor Books and released on January 16, 1990. The unabridged audiobook is read by Michael Kramer and Kate Reading. Upon first publication, "The Eye of the World" consisted of one prologue and 53 chapters, with an additional prologue authored upon re-release. On January 2, 2002, "The Eye of the World" was re-released as two separate books aimed at a young adult literature market, with larger text and a