Verghese Lab

Verghese Lab

Our laboratory studies the mechanisms of healthy vision and action, as well as the basis of attention and visual adaptation in clinical populations.

Tabs

Journal Articles
Verghese, P. (2022). Saccades during visual search in macular degeneration. Vision Research, 201. http://doi.org/10.1016/j.visres.2022.108113
Shanidze, N., Lively, Z., Lee, R., & Verghese, P.. (2022). Saccadic contributions to smooth pursuit in macular degeneration. Vision Research, 200, 108102. http://doi.org/10.1016/j.visres.2022.108102
Vullings, C., & Verghese, P.. (2021). Mapping the binocular scotoma in macular degeneration. Journal Of Vision, 21(3), 1-12. http://doi.org/https://doi.org/10.1167/jov.21.3.9
Verghese, P., Vullings, C., & Shanidze, N.. (2020). Eye Movements in Macular Degeneration. Annual Reviews Of Vision Science, 7. http://doi.org/doi.org/10.1146/annurev-vision-100119-125555
Verghese, P., & Ghahghaei, S.. (2020). Predicting stereopsis in macular degeneration. Journal Of Neuroscience. http://doi.org/10.1523/JNEUROSCI.0491-20.2020
Shanidze, N., & Verghese, P.. (2019). Motion perception in central field loss. Journal Of Vision, 19, 20–20. http://doi.org/10.1167/19.14.20
Presentations/Posters
Safi, M., Verghese, P., & Shanidze, N.. (2020). Effects of task demands on smooth pursuit gain in macular degeneration. Investigative Ophthalmology & Visual Science. Association for Research in Vision and Ophthalmology Annual Meeting: Canceled due to COVID.
Vullings, C., & Verghese, P.. (2019). Binocular scotoma mapping and eye movement patterns in central field loss. Gordon Research Conference on Eye Movements. Lewiston, USA: Lewiston, USA.
Shanidze, N., & Verghese, P.. (2019). Motion Perception in Central Field Loss: Visual Field Contributions. Investigative Ophthalmology & Visual Science. ARVO: Vancouver B.C.
Other Publications
McKee, S. P., & Verghese, P.. (2023). Binocular Vision. In Oxford Research Encyclopedia in Psychology. Oxford University Press.
Verghese, P. (2015). The Efficiency of Vision and Action. (M. S. Landy, Tran., L. T. Maloney, Ed.). http://doi.org/10.1016/j.visres.2015.06.003

Pages

  • Collage of RERC staff mebers and RERC projects

    Rehabilitation Engineering Research Center

    The Center's research goal is to develop and apply new scientific knowledge and practical, cost-effective devices to better understand and address the real-world problems of blind, visually impaired, and deaf-blind consumers

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

    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. Healthy peripheral retina is exquisitely sensitive to fast speeds, however, there is limited and conflicting information about motion processing in residual peripheral retina in patients with central field loss, often due to macular degeneration. We use psychophysical and eye tracking approaches to systematically probe speed and direction sensitivity in this  population. 

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  • Completed

    Novel Method to Teach Scotoma Awareness

    This project aims to improve visual function in individuals with age-related macular degeneration (AMD). AMD isassociated with central field loss that cannot be corrected optically.

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  • Completed

    Strategies for Efficient Visual Information Gathering

    Active visual search

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  • Completed

    Target Selection in the Real World

    Attention and Segmentation

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  • One person looking directly at another person and picking up a cup by the handle, illustrating peripheral stereopsis
    Completed

    Upper Depth Limit Across Visual Field

    Stereopsis is important for tasks of daily living such as eye-hand coordination. It is best in central vision but is also mediated by the periphery. Previously we have shown that individuals with central-field loss who have residual stereopsis in the periphery perform better at an eye-hand-coordination task. Here we sought to determine what sets the limit of stereopsis, defined as the largest disparity that supports the sustained appearance of depth, in the near periphery in healthy individuals.

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Current
Past
  • SKERI RERC logo

    SKERI Receives Rehabilitation Engineering Research Center (RERC) grant on...

    Smith-Kettlewell is proud to announce the newly awarded Rehabilitation Engineering Research Center (RERC) grant on Blindness and Low Vision. This is a five-year grant from the National Institute on Disability, Independent Living, and Rehabilitation Research, establishing Smith-Kettlewell as a center promoting the independence and well-being of people with visual impairments through research and development to improve the understanding of, and provide solutions for, challenges facing the blind and low-vision community.
  • photograph of a person's hand reaching for a cup with a grasp movement that appears to be poorly suited for the task

    Preeti Verghese Awarded NEI Grant for Amblyopia

    SKERI's Senior Scientist, Dr. Preeti Verghese - in collaboration with Drs Suzanne McKee of Smith-Kettlewell and Dr. Dennis Levi of Berkeley's Herbert Wertheim School of Optometry & Vision Science - was awarded a 5-year NIH Research Project Grant (R01) from the National Eye Institute to study the potential for residual stereopsis in those with strabismus and amblyopia.
  • man seated in an eye tracking device holding a peg he is about to place into a hole on the beg board in front of him

    Dr. Preeti Verghese Awarded NEI Grant

    Congratulations to Senior Scientist, Preeti Verghese, Ph.D., who was awarded a four-year grant from the National Eye Institute to study ways of assisting patients with age-related macular disease (AMD) in the performance of real-world tasks. Dr. Verghese’s research lab examines the neural processes, strategies, and adaptations that humans use to interact with objects in the real world and apply these to visual adaptations in clinical populations.
  • portrait photos of Preeti Verghese, Lori Lott and Natela Shanidze

    SKERI Researchers Featured on Research! America Blog

    SKERI scientists Drs Preeti Verghese, Lori Lott, and Natela Shanidze were featured on the Research! America blog for AMD/Low Vision Awareness Month.
  • Graph showing smooth pursuit gain modulation in subjects with AMD

    NEI NRSA Fellowship Award Issued to Dr. Natela Shanidze

    Congratulations to Dr. Natela Shanidze who was awarded a three-year fellowship from the National Eye Institute of the National Institutes of Health.

Principal Investigator:

Photograph of Preeti Verghese

Preeti Verghese

Links

Previous Fellows

External Collaborators: 

Christian Janssen

Jeffrey Tsai

Yee-Joon Kim, PhD

Funding: 

Maximizing visual potential in age-related macular degeneration

Stereopsis and Suppression in Strabismus and Amblyopia