English

quadrantanopia

From quadrant + anopia.

Proto-Indo-European *kʷetwṓr

…

Latin quattuor ‘four’

Latin quadrāns ‘a fourth part of something, quarter, farthing’

Old French cadran

Middle English quadrant

Today it means

noun The loss of vision in one or more quadrants of the field of view.

Language periods are conventional ranges, not dates for this word.

Etymograph / quadrantanopia