The search to find the answer to why visual agnosia occurs remains very difficult. This is because visual agnosia is a very rare syndrome, therefore, only a small number of cases are available to be studied. Moreover, the variety of ways in which visual agnosia manifests itself makes this task even more difficult. (Vecera & Gilds 1998).
Therefore, doctors are often at a loss as to what to tell patients.
The kind of treatment that is currently being offered for visual agnosics consists of two main approaches of rehabilitation. First, people with agnosia learn certain exercises that help them identify objects that are a necessity for independence (Zoltan 1996). In order to identify necessary objects, people with agnosia learn to keep objects in a specific place. Or have lists of where things hsould be, so that when they do see something, they are already expecting it to be what they are searching for. Second, as an adaptive approach, Zoltan suggested that people with agnosia use labels for objects of necessity. By utilizing both approaches people can increase their ability to recognize objects and maximize independence.
Thank you
The picture above comes from http://www.neuroexam.com/8.html, a website that helps patients know what a neurological exam for these types of problems might be like.