|Classification and external resources|
Scheme showing central connections of the optic nerves and optic tracts. (Lesions at different locations relate to different types of anopsias.)
An anopsia or anopia (from Ancient Greek ἀν- an-, "un-" and ὄψις opsis "sight"). 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 anopsia:
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