Inability to see in one quarter of the visual ?eld. Homonymous quadrantanopia is loss of vision in the same quarter of the ?eld in each EYE. Health Source: Medical Dictionary Author: Health Dictionary
n. absence or loss of one quarter of the *visual field, i.e. upper nasal (inner), upper temporal (outer), lower nasal (inner), or lower temporal (outer). Health Source: Oxford | Concise Colour Medical Dictionary Author: Jonathan Law, Elizabeth Martin