Posterior Cortical Atrophy (PCA) (also known as Benson’s Syndrome), is a rare, visual variant of Alzheimer’s disease. The disease primarily affects areas in the posterior regions of the brain (parietal, occipital, and occipitotemporal cortex) responsible for complex visual processing, spatial perception, spelling, and calculation. Unlike in typical Alzheimer’s, memory and insight are usually preserved in the early stages of the disease.