Posterior Cortical Atrophy

The most comprehensive source of information is from the UK’s Institute of Neurology’s PCA Support Group website.
Here is the link…
PCA Support Group

The following article is by Bernard Croisile in 2004.
Benson’s Syndrome

And here is an advice sheet (2005).  You can find similar advice from different institutions that have good knowledge of PCA.
PCA_David Tang Wai