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
Eye of the Wyvern Eye of the Wyvern Eye of the Wyvern is an adventure module for the "Dungeons & Dragons" fantasy role-playing game. "Eye of the Wyvern" is a wilderness adventure, and part of TSR's Fast-Play Game adventure series. The Fast-Play products, which began with the introductory adventure "The Ruined Tower" and continued with "Wrath of the Minotaur" and "Eye of the Wyvern", are intended to be easy to set up, easy to run, and easy to play, even for players who have never played "D&D" or any other roleplaying game before. "Eye of the Wyvern" begins with a very brief introduction to