Anshul Gupta1,2, Juraj Mesik3, Stephen A Engel3, Rebecca Smith1, Mark Schatza4, Aurélie Calabrèse5, Frederik J van Kuijk2, Arthur G Erdman1, Gordon E Legge3. 1. Department of Mechanical Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota, United States. 2. Department of Ophthalmology and Visual Neurosciences, University of Minnesota-Twin Cities, Minneapolis, Minnesota, United States. 3. Department of Psychology, University of Minnesota-Twin Cities, Minneapolis, Minnesota, United States. 4. Department of Computer Science & Engineering, University of Minnesota-Twin Cities, Minneapolis, Minneapolis, United States. 5. Aix-Marseille University, Centre National de la Recherche Scientifique (CNRS), Laboratoire de Psychologie Cognitive (LPC), Marseille, France.
Abstract
Purpose: People with central field loss (CFL) lose information in the scotomatous region. Remapping is a method to modify images to present the missing information outside the scotoma. This study tested the hypothesis that remapping improves reading performance for subjects with simulated CFL. Methods: Circular central scotomas, with diameters ranging from 4° to 16°, were simulated in normally sighted subjects using an eye tracker on either a head-mounted display (HMD) (experiments 1, 2) or a traditional monitor (experiment 3). In the three experiments, reading speed was measured for groups of 7, 11, and 13 subjects with and without remapping of text. Results: Remapping increased reading speed in all three experiments. On the traditional monitor, it increased reading speed by 34% (8°), 38% (12°), and 35% (16°). In the two HMD experiments, remapping increased reading speed only for the largest scotoma size, possibly due to latency of updating of the simulated scotoma. Conclusions: Remapping significantly increased reading speed in simulated CFL subjects. Additional testing should examine the efficacy of remapping for reading and other visual tasks for patients with advanced CFL.
Purpose: People with central field loss (CFL) lose information in the scotomatous region. Remapping is a method to modify images to present the missing information outside the scotoma. This study tested the hypothesis that remapping improves reading performance for subjects with simulated CFL. Methods:Circular central scotomas, with diameters ranging from 4° to 16°, were simulated in normally sighted subjects using an eye tracker on either a head-mounted display (HMD) (experiments 1, 2) or a traditional monitor (experiment 3). In the three experiments, reading speed was measured for groups of 7, 11, and 13 subjects with and without remapping of text. Results: Remapping increased reading speed in all three experiments. On the traditional monitor, it increased reading speed by 34% (8°), 38% (12°), and 35% (16°). In the two HMD experiments, remapping increased reading speed only for the largest scotoma size, possibly due to latency of updating of the simulated scotoma. Conclusions: Remapping significantly increased reading speed in simulated CFL subjects. Additional testing should examine the efficacy of remapping for reading and other visual tasks for patients with advanced CFL.
Authors: Katharina Rosengarth; Ingo Keck; Sabine Brandl-Rühle; Jozef Frolo; Karsten Hufendiek; Mark W Greenlee; Tina Plank Journal: Front Psychol Date: 2013-07-17
Authors: Ashley D Deemer; Christopher K Bradley; Nicole C Ross; Danielle M Natale; Rath Itthipanichpong; Frank S Werblin; Robert W Massof Journal: Optom Vis Sci Date: 2018-09 Impact factor: 1.973
Authors: Mina Iskander; Titilola Ogunsola; Rithambara Ramachandran; Richard McGowan; Lama A Al-Aswad Journal: Asia Pac J Ophthalmol (Phila) Date: 2021 May-Jun 01