Answer:
Conversion disorder
Step-by-step explanation:
Conversion disorder also referred to as functional neurological disorders are symptoms connected to the nervous system that cannot be attributed to a Medical condition. In such condition the patient will not be able to control means if senses such as vision, or ability to hear. Conversion disorder could be caused by psychological stress or trauma
Vision problems or blindness is one of the major symptoms of conversion disorder, so Jeanne sudden impairment of vision is likely caused by the psychological trauma of her husband's absence.