Posterior cortical atrophy (PCA) is manifested by neuro-visual disorders that alter the spatial location of objects, their manipulation and/or recognition. Its etiology is most often neurodegenerative, with a major impact on the autonomy and mood of patients and their families. Few studies have focused on non-medication management of these disorders.

The present study thus has a double objective: the development of a complete tool to work on the recognition, localization and/or manipulation of objects; and the evaluation of the effectiveness of this type of management.

Inclusion Criteria:

• Age >50 years old
• Male or Female
• Patients with a diagnosis of PCA according to the criteria of Tang-Wai et al (2004)
• MMS>15
• Voluntary, written and informed consent of the patient himself or its legal representative (guardian/curator), with oral consent of the patient in all cases
• Anti-Alzheimer's and psychotropic treatments stable for one month, if taken by the patient
• Affiliation to a social security system

Exclusion Criteria:

• Uncorrected visual disorders with non-degenerative etiology (AV<0.5)
• Person under the protection of justice
• Pregnant women (a pregnancy test will be performed in premenopausal women)