Reduced peripheral vision in glaucoma and boundary extension. Lenoble, Q., Lossouarn, A., Rouland, J., & Boucart, M. Clinical & experimental optometry, 107(2):234–241, mar, 2024. doi abstract bibtex CLINICAL RELEVANCE: Peripheral vision is known to be critical for spatial navigation. However, visual cognition, which impacts peripheral vision, has not been studied extensively in glaucoma. BACKGROUND: Spatial memory was assessed with a known to induce a robust memory distortion called "boundary extension" in which participants erroneously remember seeing more of a scene than was present in the sensory input. METHODS: Fifteen patients with glaucoma and 15 age-matched normally sighted controls participated in the experiment. Participants were shown 10 photographs of natural scenes randomly displayed for 0.5 s or 10 s. Following each scene, the participant was asked to draw it from memory. RESULTS: On average, boundary extension was larger, by 12%, for patients than for controls, but the difference was significant for 4 photographs. Patients tended to add more space between the object and the edges than there was between the objects and the border of the photograph. A control experiment in which participants were asked to draw isolated objects without scene context resulted in a significant reduction of the memory distortion in both groups, but patients still drew the objects smaller than controls. CONCLUSION: The reduced field of view in glaucoma has an impact on spatial memory for scenes and on perception of size.
@article{Lenoble2024,
abstract = {CLINICAL RELEVANCE: Peripheral vision is known to be critical for spatial navigation. However, visual cognition, which impacts peripheral vision, has not been studied extensively in glaucoma. BACKGROUND: Spatial memory was assessed with a known to induce a robust memory distortion called "boundary extension" in which participants erroneously remember seeing more of a scene than was present in the sensory input. METHODS: Fifteen patients with glaucoma and 15 age-matched normally sighted controls participated in the experiment. Participants were shown 10 photographs of natural scenes randomly displayed for 0.5 s or 10 s. Following each scene, the participant was asked to draw it from memory. RESULTS: On average, boundary extension was larger, by 12%, for patients than for controls, but the difference was significant for 4 photographs. Patients tended to add more space between the object and the edges than there was between the objects and the border of the photograph. A control experiment in which participants were asked to draw isolated objects without scene context resulted in a significant reduction of the memory distortion in both groups, but patients still drew the objects smaller than controls. CONCLUSION: The reduced field of view in glaucoma has an impact on spatial memory for scenes and on perception of size.},
author = {Lenoble, Quentin and Lossouarn, Adrien and Rouland, Jean-Fran{\c{c}}ois and Boucart, Muriel},
doi = {10.1080/08164622.2022.2107892},
issn = {1444-0938 (Electronic)},
journal = {Clinical & experimental optometry},
keywords = {Glaucoma,Humans,Scotoma,Visual Perception},
language = {eng},
month = {mar},
number = {2},
pages = {234--241},
pmid = {35946410},
title = {{Reduced peripheral vision in glaucoma and boundary extension.}},
volume = {107},
year = {2024}
}
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