Saeideh Ghahghaei
Research Associate
Degrees: PhD in Cognitive Psychology, Goldsmiths, University of London, UK
BSc in Electrical Engineering, Sharift University of Technology, Tehran, Iran
BSc in Electrical Engineering, Sharift University of Technology, Tehran, Iran
Tabs
Journal Articles
. (2019). The upper disparity limit increases gradually with eccentricity. Journal Of Vision, 19(11). (Original work published 2019)
. (2019). Calibration of the PlusOptix PowerRef 3 with change in viewing distance, adult age and refractive error. Ophthalmic And Physiological Optics, 39(4), 7.
. (2018). The effect of load on spatial attention depends on preview: Evidence from a reading study. Vision Research.
. (2017). Texture segmentation influences the spatial profile of presaccadic attention. Journal Of Vision, 17(2).
. (2016). Accuracy of Eye Position for Saccades and Smooth Pursuit. Journal Of Vision, 16(23). http://doi.org/10.1167/16.15.23
. (2016). Depth Perception and Grasp in Central Field Loss. Investigative Ophthalmology & Visual Science, 57, 1476-87.
. (2013). Effects of load on the time course of attentional engagement, disengagement, and orienting in reading. Quarterly Journal Of Experimental Psychology, 66(3).
Presentations/Posters
. (2019). Reading in mild to moderate traumatic brain injury (mTBI). Journal of Vision.
. (2015). Feedback about gaze position improves saccade efficiency. Journal of vision.
. (2013). Immediate feedback improves saccadic efficiency. Journal of Vision. Association for Research in Vision and Ophthalmology.
Rehabilitation Engineering Research Center
The Center's research goal is to develop and apply new scientific knowledge and practical, cost-effective devices to understand and address better the real-world problems of blind, visually impaired, and deaf-blind consumers. The RERC has many ongoing R...
Chandna Lab (SEELAB)
We use rigorous scientific research with the goal to improve detection and treatment outcomes for individuals with strabismus, amblyopia, and cerebral visual impairment.
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.
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 showed that individuals with central field loss, but have residual stereopsis in the periphery perform better at an eye- hand...
Investigating reading in individuals with cerebral visual impairment (CVI)
There are many factors that can impair reading in CVI including, but not limited to, (i) increased crowding (ii) simultagnosia and (iii) abnormal eye movements. In this project, we aim to (i) understand how CVI affects reading (ii) how current rehabilitation techniques or assistive technologies...
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. ...
Calibration of Eccentric Power Refractor
Eccentric power refractors need to be calibrated for accommodation and gaze position for individual participnats. Calibration however can be time consuming. We look at different conditions in which calibration is necessary or preferable.
The window of spatial attention in reading
In reading, visual information is extracted from a window around the gaze. For the first time, we looked at effects of word's processing load on the dynamics of this window over the course of a fixation when sequential saccades are made.
Parafoveal Crowding
Crowding increases with eccentricity, and is most readily observed in the periphery. During natural, active vision however, central vision plays an important role. Measures of critical distance to estimate crowding are difficult in central vision, as these distances are small. Any overlap of...
SKERI-VF
Walker et al (Renninger, Psomadakis, Dang & Fletcher, 2008) suggested a novel method to estimate the monocular scotoma area from perimetry data in macular degeneration based on (i) an optic-disc based estimation of the location of the fovea and (ii) the increase...
CVI@SKI Meeting
We are a Smith-Kettlewell Eye Research Institute sponsored, Blind Babies Foundation supported research advocacy group consisting of SKI researchers, select clinicians, teachers of the visually impaired, and parents of children with cerebral visual impairment.
Higher Visual Function (HVF) in individuals with cerebral visual impairment (CVI)
Cerebral visual impairment often affects higher level visual function (HVF); for example, spatial attention, motion perception, divided attention, etc. Such impairments sometimes are not easy to detect by a routine vision test. Nevertheless, parents may observe abnormalities in the daily living...
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.
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...
Eye movements and Accommodation Patterns in Strabismus
Strabismus misaligned eyes is a common developmental condition in young children that can lead to amblyopia or poor vision and other forms of low vision. This project looks at the eye movements in relation to accommodation or focusing power in these patients to determine predictors of strabismus and outcome of treatment, with the goal of improving early detection, intervention and treatment.
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