An<unk>  is a defect in the visual field. If the defect is only partial, then the portion of the field with the defect can be used to isolate the underlying cause. Types of partial<unk> : *Hemianopsia *Homonymous hemianopsia *Heteronymous hemianopsia *Binasal hemianopsia *Bitemporal hemianopsia *Superior hemianopia *Inferior hemianopia *Quadrantanopia
Anopsia
Xanthopsia
Ocular dysmetria
Cerebral polyopia
Oscillopsia
Cyanopsia
Photopsia
Macropsia