NYCTALOPIA

[ ˌnɪktə'ləʊpɪə ]

■ noun a condition characterized by an abnormal inability to see in dim light or at night, typically caused by vitamin A deficiency.

Origin

C17: via late L. from Gk nuktalōps , from nux , nukt- 'night' + alaos 'blind' + ōps 'eye'.