EyeWiki:Featured article/January 1, 2017
Featured Article for December 31, 2016
Visual variant of Alzheimer’s disease
Visual variant of Alzheimer’s disease (VVAD), also known as Posterior Cortical Atrophy (PCA) or Benson’s syndrome, is a rare neurodegenerative disease. It is characterised by progressive higher order visual dysfunction with relative sparing of other cognitive functions until late in the course. The majority of cases share pathological features with Alzheimer’s Disease (AD).