Reading rates of patients with central scotomas with electronic remappings

Jenny S. Ho; David S. Loshin; R. Shane Barton; Richard D. Juday

doi:10.1117/12.243589

26 June 1996 Reading rates of patients with central scotomas with electronic remappings

Jenny S. Ho, David S. Loshin, R. Shane Barton, Richard D. Juday

Proceedings Volume 2753, Visual Information Processing V; (1996) https://doi.org/10.1117/12.243589
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

Central visual defect results in loss of vision in the region of retina with the highest resolution. Due to central visual field loss, these patients experience difficulty in visual tasks such as reading and recognizing faces. Age related macular degeneration (ARMD) and juvenile macular degeneration (JMD), destroy the function of the central retina. NASA Johnson Space Center has developed an electronic remapper that can warp from one coordinate system to another on a television screen. The remapper was used in this study to redistribute visual images projecting on the macular lesion to the still functioning peripheral retina. The purpose of this study was to investigate whether remapping of reading material around the central scotomas of patients with ARMD and JMD improved reading rates. Reading rates of nonremapped words and remapped words were compared under three viewing conditions: (1) Reading without stabilization under free viewing condition, (2) Reading with image stabilization through the eye tracker, (3) Reading without image stabilization through the eye tracker.

Citation Download Citation

Jenny S. Ho, David S. Loshin, R. Shane Barton, and Richard D. Juday "Reading rates of patients with central scotomas with electronic remappings", Proc. SPIE 2753, Visual Information Processing V, (26 June 1996); https://doi.org/10.1117/12.243589

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