Even during fixation, the eye is rarely still, as miniature eye movements continue to occur within fixational periods of the eye. These miniature movements are referred to as fixational eye movements. Microsaccades are one of the three types of fixational eye movements that have been identified. Microsaccades have been attributed to different visual processes/phenomena such as fixation stability, perceptual fading, and multistable perception. Still, debates surrounding the functional role of microsaccades in vision ensued, as many of the findings from earlier microsaccade reports contradict one another and the polarity in the field caused by these debates led many to believe that microsaccades do not hold a necessary/specialized role in vision. To gain a deeper understanding of microsaccades and its relevance in vision, we sought out to assess the role of microsaccades in bistable motion perception in our behavioral/eye-tracking study. Observers participated in an eye-tracking experiment where they were asked to complete a motion discrimination task while viewing a bistable apparent motion stimuli. The collected eye-tracking data was then used to train a classification model to predict directions of illusory motion perceived by observers. We found that small changes in gaze position during fixation, occurring within or outside microsaccadic events, predicted the direction of motion pattern imposed by the motion stimuli. Our findings suggest that microsaccades and fixational eye movements are correlated with motion perception and that miniature eye movements occurring during fixation may have relevance in vision. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2021. / FAU Electronic Theses and Dissertations Collection

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Study aim: to assess the role of pH measurement and the need for neutralising agents (Diphoterine®) in the initial management of chemical burns in an academic hospital Method: prospective, interventional study Results: The conjunctival pH of 18 eyes was checked and 5 eyes with an abnormal pH required irrigation with Diphoterine®. The pH using urine dipstick was equivalent to universal indicator paper. Most of the patients were young males who had been involved in domestic or occupational accidents. The majority of patients presented with mild (Grade 1) burns and had a delayed presentation to hospital Conclusion: Neutralising agents are a first aid rinsing solution and most effective immediately after injury. The use of urine dipsticks to measure the conjunctival pH of patients with chemical burns can assist in identifying patients who require irrigation and was equivalent to universal indicator paper. Of the eyes irrigated, Diphoterine® was effective in neutralising the conjunctival pH 80% of eyes.

Thesis (Ph. D.)--University of Nebraska-Lincoln, 2003. / Title from title screen. PDF file of dissertation: xv, 131 p. : ill. (some col.). Site viewed on Feb. 19, 2004. Includes bibliographical references.

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Thesis (M.F.A.)--University of Hawaii at Manoa, 2005. / Includes bibliographical references (leaves 23). / iv, 23 leaves, bound ill. 29 cm

Thesis (Ph. D.)--University of Illinois, 1919. / Vita. "Contribution from the Zoological laboratory of the University of Illinois, no. 148." "Reprinted from the Journal of general physiology, March 20, 1920, vol. II, no. 4." Bibliography: p. 432, 463-464.