Can a person with dementia experience sight loss, even if they have not been diagnosed with a sight condition?

Yes, this is due to changes in the brain associated with dementia and its affects on visual processing.

Damage to the visual system can cause:

  • mis-perceptions - the person sees one thing as something else
  • mis-identifications - damage to specific parts of the brain can lead to problems identifying specific objects and people
  • Loss of depth perception
  • Reduced colour and contrast sensitivity
  • Reduced visual acuity
  • Shrinking peripheral vision
  • Being less able to detect movement
  • Double vision

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