Between Dec 19, 2024 and Jan 2, 2025, datasets can be submitted to DRUM but will not be processed until after the break. Staff will not be available to answer email during this period, and will not be able to provide DOIs until after Jan 2. If you are in need of a DOI during this period, consider Dryad or OpenICPSR. Submission responses to the UDC may also be delayed during this time.

Browsing by Subject "preferred retinal locus"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Identifying the Preferred Retinal Locus for Reading
    (2023-04) Fidanci, Arda
    People with central vision loss (CVL) often adopt a specific retinal location, known as the preferred retinal locus (PRL), outside of the region of loss to fixate targets in the visual field. The PRL is most often measured using simple fixation tasks. It has been reported that this location on the retina, also known as fixational PRL (fPRL), does not necessarily correspond to the retinal locus used in other tasks. However, it has been challenging to measure the PRL while observers are reading, a task involving frequent eye movements. This thesis presents a study investigating whether the attended location during reading in CVL participants corresponds to the fixation PRL. In our study, we developed a method to determine the retinal area engaged during fixations in reading. We validated this method for identifying the retinal location attended to during reading with ten control participants. We then used this method for assessing reading PRLs in three patients with central vision loss. Results showed that while two of the CVL patients used the fixational PRL location in reading, another patient with CVL appeared to use a different retinal location in reading. These findings help us to understand the practical use of PRL locations across tasks, especially for uncovering whether and how often the fixational PRL corresponds to the PRL used for reading.