Head and Gaze Behavior in Retinitis Pigmentosa
Samuel A Titchener, Lauren N Ayton, Carla J Abbott, James B Fallon, Mohit N Shivdasani, Emily Caruso, Pyrawy Sivarajah, Matthew A Petoe
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | Published : 2019
Purpose: Peripheral visual field loss (PVFL) due to retinitis pigmentosa (RP) decreases saccades to areas of visual defect, leading to a habitually confined range of eye movement. We investigated the relative contributions of head and eye movement in RP patients and normal-sighted controls to determine whether this reduced eye movement is offset by increased head movement. Methods: Eye-head coordination was examined in 18 early-moderate RP patients, 4 late-stage RP patients, and 19 normal-sighted controls. Three metrics were extracted: the extent of eye, head, and total gaze (eye+head) movement while viewing a naturalistic scene; head gain, the ratio of head movement to total gaze movement d..View full abstract
Awarded by National Health and Medical Research Council
Supported by the Clive and Vera Ramaciotti Foundation (MAP; Health Investment Grant) and by the Bertalli Family Foundation to the Bionics Institute, project grants from the National Health and Medical Research Council (GNT 1063093 awarded to MNS, GNT 1082358 awarded to LNA and MAP), and the Melbourne Neuroscience Institute Australian Government Research Training Program (SAT). The Bionics Institute and the Centre for Eye Research Australia receive funding from the Victorian Government through its Operational Infrastructure Program.