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Related Concept Videos

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Poster Session: Assessing the relationship between central visual field loss, physical activity, and cognitive

Holly D H Brown1, Eleanor J Hoyle1, Leah G Kelly2

  • 1Centre for Cognition and Neuroscience, School of Human and Health Sciences, University of Huddersfield, UK.

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Summary

Central vision loss, common in macular-affecting pathologies (MAP), impacts daily activities and cognitive function. Lower physical activity in MAP patients correlated with poorer cognitive scores, highlighting a link between vision, activity, and cognition.

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Area of Science:

  • Ophthalmology
  • Gerontology
  • Cognitive Neuroscience

Background:

  • Central vision loss, often due to macular-affecting pathologies (MAP), significantly impairs daily activities, mobility, and social engagement.
  • Such impairments are linked to accelerated cognitive decline and affect healthy aging processes.
  • Understanding the interplay between vision loss, physical activity, and cognitive function is crucial for this demographic.

Purpose of the Study:

  • To compare cognitive and physical changes in individuals with MAP versus age-matched sighted controls.
  • To investigate the relationship between visual status, physical activity levels, and cognitive performance.

Main Methods:

  • Recruited participants with MAP and sighted controls from the USA and UK.
  • Assessed cognitive function using the MoCA-Blind (Montreal Cognitive Assessment validated for the visually impaired).
  • Evaluated physical and lifestyle activity using the augmented Victoria Longitudinal Study (aVLS) questionnaire and the Timed Up-and-Go test.

Main Results:

  • Individuals with MAP reported significantly lower physical and lifestyle activity levels compared to sighted controls, as measured by the aVLS questionnaire.
  • Both visual status (MAP vs. sighted) and aVLS activity levels predicted MoCA-Blind scores.
  • The Timed Up-and-Go test did not predict MoCA-Blind scores when age was controlled for.

Conclusions:

  • Physical and lifestyle activity levels, alongside visual status, are significant predictors of cognitive function in individuals with central vision loss.
  • Macular-affecting pathologies are associated with reduced physical activity, which may contribute to cognitive differences observed.
  • Further research is needed to elucidate the causal pathways and develop targeted interventions.