Posterior Cortical Atrophy


Posterior PCA infographic

Posterior Cortical Atrophy (PCA), also known as Benson’s syndrome, is a progressive degenerative condition which causes damage to brain cells at the back (posterior) of the brain. This area is responsible for processing what we see.

People with PCA generally experience some of these changes associated with vision:

  • difficulty recognising familiar objects and faces
  • increased sensitivity to bright lights or shiny surfaces
  • double vision
  • particular difficulty seeing in fading or low light conditions 
  • difficulty judging depth and speed
  • stationary objects may appear to move

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