Projects

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    The dots on the left are moving faster than the dots on the right side of the screen

    Motion Perception in Central Field Loss

    The project investigates motion perception in individuals with vision loss due to central retinal lesion, but who retain healthy peripheral retina.

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    Reading in mTBI

    People with mTBI often complain about dificulty in reading in spite of normal results in usual eye exams. We investigate this issue by looking at accommodation and reading rate and subjective measurement of reading difficuties for a variaty of reading tasks in normal and mTBI population. 

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    Adaptive Visual Strategies for Individuals with Macular Degeneration

    In this project we try to gain a better understanding of what visual strategies people use to gather information in the world.

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    Image of the retina with a centroid target superimposed. The fovea is off-center from the target.

    Fovea Use During Smooth Pursuit

    There is continuing debate as to whether smooth pursuit relies on the foveation of a moving target, especially when the target is compact. Previous studies have shown that gaze is placed on the center-of-mass of a target during saccadic eye movements.

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    Experimental equipment: head-mounted eye-tracking goggles and head movement sensor

    Coordination of Eye and Head Movements in Central Field Loss

    This project investigates the interaction between central field loss (CFL) and vestibular function.

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    Sample indoor sign showing automatic detection in yellow

    Sign Finder

    This project seeks to develop a computer vision-based system that allows a visually impaired traveler to find and read informational signs, such as signs labeling office doors, streets, restrooms and Exit signs.

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    map pose and exit detection image

    A Computer Vision-Based Indoor Wayfinding Tool

    The ability to navigate safely and confidently is a fundamental requirement for independent travel and access to many settings such as work, school, shopping, transit and healthcare. Navigation is particularly challenging for people with visual impairments, who have limited ability to see signs, landmarks or maps posted in the environment.

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    The Role of Selective Visual Attention in Amblyopic Suppression

    Individuals with strabismus are confronted with double vision, their brain has to choose to attend to one image and ignore or suppress the other. It has been commonly suggested that a constant suppression on the non-preferred eye in strabismus is responsible for the development of amblyopia. In the current project, we study the role of top-influences of attention in amblyopic suppression and test the hypothesis that visual suppression in amblyopia may be a form of long-term attentional “neglect”.

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    researchers looking at a computer monitor

    Alleviating interocular suppression by high-attention demand training in amblyopia

    The goal of this project is to test a hypothesis that whether or not training patients to pay more attention to the input from the amblyopic eye can overcome interocular suppression to treat amblyopia.

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    Fellow Eye Deficits in Strabismic Amblyopia

    Fellow eye abnormalities have been reported in a number of psychophysical and VEP studies. The goal of this project is to characterize the fellow eye deficits.

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    image of item at hou lab

    Grouping and Perception in Different Types of Amblyopia

    This project was to measure the neural correlates of grouping and perception in different types of amblyopia. We found that strabismus generates significant abnormalities at both early and later stages of cortical processing and, importantly, that these abnormalities are independent of visual-acuity deficits

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