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
In the Land of the Blind the Blue Eye Man is King In the Land of the Blind the Blue Eye Man is King In the Land of the Blind the Blue Eye Man is King is a painting by Deborah Grant. It is in the collection of the Nasher Museum of Art in Durham, North Carolina in the United States. This large scale, multi-panel, colorful painting depicts the aftermath of Hurricane Katrina. Starting from the left panel: This painting was purchased from Grant in 2008 by Steve Turner Contemporary. In 2013, it was purchased by the Nasher with funding from JoAnn and Ronald Busuttil. This piece is part of Grant's body