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Verghese Lab

Principal Investigator:

Preeti Verghese

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Publications

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Other Publications

Verghese P, Chopin A, Gomes-Tomaz Â, Alcalde NG, Levi DM. (2025). Vergence anomalies are associated with impaired stereopsis in amblyopia. Vision Res. 237:108696. doi: 10.1016/j.visres.2025.108696.

Verghese, P. . (2023). The utility of peripheral stereopsis. Frontiers in Neuroscience. (Original work published 2023)

Shanidze, N. ., Lively, Z. ., Lee, R. ., & Verghese, P. . (2022). Saccadic contributions to smooth pursuit in macular degeneration. Vision Research, 200, 108102. 10.1016/j.visres.2022.108102 (Original work published 2022)

Vullings, C. ., Lively, Z. ., & Verghese, P. . (2022). Saccades during visual search in macular degeneration. Vision Research, 201. 10.1016/j.visres.2022.108113 (Original work published 2022)

Verghese, P. ., Ghahghaei, S. ., & Lively, Z. . (2022). Mapping residual stereopsis in macular degeneration. Journal of Vision, 22(13). (Original work published 2022)

Vullings, C. ., & Verghese, P. . (2021). Mapping the binocular scotoma in macular degeneration. Journal of Vision, 21(3), 1-12. https://doi.org/10.1167/jov.21.3.9 (Original work published 2021)

Verghese, P. ., & Ghahghaei, S. . (2020). Predicting stereopsis in macular degeneration. Journal of Neuroscience. 10.1523/JNEUROSCI.0491-20.2020 (Original work published 2020)

Verghese, P. ., Vullings, C. ., & Shanidze, N. . (2020). Eye Movements in Macular Degeneration. Annual Reviews of Vision Science, 7. doi.org/10.1146/annurev-vision-100119-125555 (Original work published 2021)

Shanidze, N. ., & Verghese, P. . (2019). Motion perception in central field loss. Journal of Vision, 19, 20–20. 10.1167/19.14.20 (Original work published 2019)

Ghahghaei, S. ., McKee, S. P., & Verghese, P. . (2019). The upper disparity limit increases gradually with eccentricity. Journal of Vision, 19(11). (Original work published 2019)

Stewart, E. ., Verghese, P. ., & Ma-Wyatt, A. . (2019). The spatial and temporal properties of attentional selectivity for saccades and reaches. Journal of Vision, 19(9):12. (Original work published 2019)

Verghese, P. ., McKee, S. P., & Levi, D. M. (2019). Attention Deficits in Amblyopia. Current Opinion in Psychology, 29. (Original work published 2019)

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Chopin, A., Antico, L., Angelillo, M., Briguet, M., Schaefer, O., & Bavelier, D. (2025). Can mindfulness meditation improve learning abilities? A cross-sectional study. Journal of Vision, 25(9), 2733.

Verghese, P. & Tomaz, (2025). The best stereoacuity may not be at the fovea. Journal of Vision, 25(9), 2792.

Szinte, M. ., Lascombes, U. ., Sheynin, Y. ., Levi, D. M., Silver, M. A., & Chopin, A. . (2024). Modeling retinotopic maps in amblyopia reveals cortical reorganization across the visual hierarchy.

Verghese, P. ., Safi, M. ., & Shanidze, N. . (2024). Deficits in smooth pursuit in macular degeneration impact dynamic visual acuity. Seattle, WA, USA.

Shanidze, N. ., Lively, Z. ., Lee, R. ., Velisar, A. ., & Verghese, P. . (2021). Saccades during smooth pursuit in macular degeneration. (Original work published 2021)

Safi, M. ., Verghese, P. ., & Shanidze, N. . (2020). Effects of task demands on smooth pursuit gain in macular degeneration. Canceled due to COVID: Association for Research in Vision and Ophthalmology Annual Meeting. (Original work published 2020)

Shanidze, N. ., & Verghese, P. . (2018). Motion Perception in Central Field Loss.

Shanidze, N. ., & Verghese, P. . (2019). Motion Perception in Central Field Loss: Visual Field Contributions. Vancouver B.C.: ARVO. (Original work published 2019)

Vullings, C. ., & Verghese, P. . (2019). Binocular scotoma mapping and eye movement patterns in central field loss. Lewiston, USA. (Original work published 2019)

Vullings, C. ., & Verghese, P. . (2019). Mapping the binocular scotoma in macular degeneration. (Original work published 2019)

Shanidze, N. ., Ullman, E. ., Badler, J. B., & Verghese, P. . (2018). Interaction of Eye and Head Movements during Smooth Pursuit in Macular Degeneration.

Shanidze, N. ., Heinen, S. J., & Verghese, P. . (2016). Gaze Changes from Binocular to Monocular Viewing during Smooth Pursuit in Macular Degeneration.

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McKee, S. P., & Verghese, P. . (2023). Binocular Vision. In Oxford Research Encyclopedia in Psychology. Oxford University Press. doi.org/10.1093/acrefore/9780190236557.013.885 (Original work published 2023)

Verghese, P. ., Maloney, L. T., & Landy, M. S. (2015). The Efficiency of Vision and Action. 10.1016/j.visres.2015.06.003

Projects

a pic showing a scientist holding an ipad and wearing red-green anaglyph glasses

Active

Binocular rivalry as a detection tool for amblyopia

Active

Vergence and Stereopsis in Amblyopia & Strabismus

Vergence to disparity targets in the central visual field is impaired in individuals with amblyopia and strabismus.

Active

Modeling Smooth Pursuit Eye-Movement Deficits in Macular Degeneration

The project investigates the deficits in smooth pursuit in individuals with age-related macular degeneration within the framework of a Bayesian model.

Active

Stereopsis in Macular Degeneration

Macular degeneration affects the central retina, often causing asymmetrical damage to the two eyes. How does this asymmetrical loss affect stereopsis — the percept of depth generated by the small separation of image features in the two eyes?

diagram of eyes tracking target and scotoma result

Active

Tracking a target in depth with central field loss

Bilateral field loss due to maculopathy creates a scotoma that extends in depth — a volume scotoma. Morevoer the size of the scotoma depends on whether observers turn their eyes to track a target as it comes closer. This project investigates how the volume scotoma affects the ability to track oncoming targets in these individuals, and in controls with a simulated volume scotoma.

Active

Blindness and Low Vision Support Group

Join Dr. Don Fletcher, one of the world’s leading authorities on Low Vision Rehabilitation, to share experiences and learn about the things that help you maintain a full and happy life while living with low vision.

Placing a peg in a peg board while hand and finger position is being tracked.

Active

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.

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

Active

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. This research aims to understand whether eye placement is similarly centered during smooth pursuit and whether foveation is necessary for pursuing a small stimulus.

Active

Eye-Hand coordination in Central Field Loss

Eye-hand coordination in AMD

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.

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.

Completed

Characteristics of Smooth Pursuit in Individuals with Central Field Loss

This project investigates the properties of smooth pursuit eye movements in individuals with macular degeneration. Commonly believed to be a fovea-linked eye movement, smooth pursuit has not been previously investigated in individuals with central field loss, despite its importance for tracking moving objects, such as vehicles or pedestrians on a busy street.

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. Individuals with AMD are often unaware of their scotoma and their eye movements follow more random patterns, compared to adults with healthy vision. With funding from the National Institutes of Health and Pacific Vision Foundation, we are training indviduals with AMD to direct their eye movements into their scotoma, so that they can sample missing information.

Completed