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Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling

PURPOSE: The purpose of this study was to characterize the impact of lighting changes on gait in elderly patients with glaucoma and evaluate whether associations are mediated by fear of falling (FOF). METHODS: Gait initiation and parameters measured with the GAITRite Electronic Walkway were captured...

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Autores principales: Bicket, Amanda K., Mihailovic, Aleksandra, E, Jian-Yu, Nguyen, Angeline, Mukherjee, Moneesha Rani, Friedman, David S., Ramulu, Pradeep Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7745602/
https://www.ncbi.nlm.nih.gov/pubmed/33364078
http://dx.doi.org/10.1167/tvst.9.13.23
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author Bicket, Amanda K.
Mihailovic, Aleksandra
E, Jian-Yu
Nguyen, Angeline
Mukherjee, Moneesha Rani
Friedman, David S.
Ramulu, Pradeep Y.
author_facet Bicket, Amanda K.
Mihailovic, Aleksandra
E, Jian-Yu
Nguyen, Angeline
Mukherjee, Moneesha Rani
Friedman, David S.
Ramulu, Pradeep Y.
author_sort Bicket, Amanda K.
collection PubMed
description PURPOSE: The purpose of this study was to characterize the impact of lighting changes on gait in elderly patients with glaucoma and evaluate whether associations are mediated by fear of falling (FOF). METHODS: Gait initiation and parameters measured with the GAITRite Electronic Walkway were captured in normal indoor light, then in dim light, and again in normal light (normal post dim [NPD]). Participants’ right and left eye visual fields (VFs) were merged into integrated VF (IVF) sensitivities. FOF was evaluated using a Rasch-analyzed questionnaire. Multivariable regression models evaluated whether IVF sensitivity was associated with lighting-dependent gait changes and if this relationship was mediated by FOF. RESULTS: In 213 participants (mean age = 71.4 years), gait initiation in dim light took longer with more VF damage (P = 0.02). Greater VF damage was associated with slower gait in dim (P < 0.001) and NPD (P = 0.003) lighting, as well as shorter strides (P = 0.02), broader stance (P = 0.003), and more variable stride velocity and length in all lighting (all P < 0.03). When moving from normal to dim lighting, those with more VF damage slowed gait and cadence, shortened stride length, and lengthened double support time (all P < 0.001). Velocity, cadence, and double support time did not return to baseline in NPD lighting (all P < 0.05). Fear of falling did not appear to mediate the relationship between IVF sensitivity and lighting-dependent gait changes. CONCLUSIONS: Patients with more VF damage demonstrate gait degradation in extreme or changing lighting, which is not mediated by FOF. TRANSLATIONAL RELEVANCE: Quantitative spatiotemporal gait evaluation reveals lighting-associated impairment, supporting patient-reported difficulty with nonideal lighting and equipping providers to advise patients about limitations.
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spelling pubmed-77456022020-12-23 Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling Bicket, Amanda K. Mihailovic, Aleksandra E, Jian-Yu Nguyen, Angeline Mukherjee, Moneesha Rani Friedman, David S. Ramulu, Pradeep Y. Transl Vis Sci Technol Article PURPOSE: The purpose of this study was to characterize the impact of lighting changes on gait in elderly patients with glaucoma and evaluate whether associations are mediated by fear of falling (FOF). METHODS: Gait initiation and parameters measured with the GAITRite Electronic Walkway were captured in normal indoor light, then in dim light, and again in normal light (normal post dim [NPD]). Participants’ right and left eye visual fields (VFs) were merged into integrated VF (IVF) sensitivities. FOF was evaluated using a Rasch-analyzed questionnaire. Multivariable regression models evaluated whether IVF sensitivity was associated with lighting-dependent gait changes and if this relationship was mediated by FOF. RESULTS: In 213 participants (mean age = 71.4 years), gait initiation in dim light took longer with more VF damage (P = 0.02). Greater VF damage was associated with slower gait in dim (P < 0.001) and NPD (P = 0.003) lighting, as well as shorter strides (P = 0.02), broader stance (P = 0.003), and more variable stride velocity and length in all lighting (all P < 0.03). When moving from normal to dim lighting, those with more VF damage slowed gait and cadence, shortened stride length, and lengthened double support time (all P < 0.001). Velocity, cadence, and double support time did not return to baseline in NPD lighting (all P < 0.05). Fear of falling did not appear to mediate the relationship between IVF sensitivity and lighting-dependent gait changes. CONCLUSIONS: Patients with more VF damage demonstrate gait degradation in extreme or changing lighting, which is not mediated by FOF. TRANSLATIONAL RELEVANCE: Quantitative spatiotemporal gait evaluation reveals lighting-associated impairment, supporting patient-reported difficulty with nonideal lighting and equipping providers to advise patients about limitations. The Association for Research in Vision and Ophthalmology 2020-12-16 /pmc/articles/PMC7745602/ /pubmed/33364078 http://dx.doi.org/10.1167/tvst.9.13.23 Text en Copyright 2020 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
spellingShingle Article
Bicket, Amanda K.
Mihailovic, Aleksandra
E, Jian-Yu
Nguyen, Angeline
Mukherjee, Moneesha Rani
Friedman, David S.
Ramulu, Pradeep Y.
Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title_full Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title_fullStr Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title_full_unstemmed Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title_short Gait in Elderly Glaucoma: Impact of Lighting Conditions, Changes in Lighting, and Fear of Falling
title_sort gait in elderly glaucoma: impact of lighting conditions, changes in lighting, and fear of falling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7745602/
https://www.ncbi.nlm.nih.gov/pubmed/33364078
http://dx.doi.org/10.1167/tvst.9.13.23
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