O OftalmopediaAn open ophthalmology reference

Anopsia

AI overview

An anopsia, or anopia, is a defect in the visual field.

Key points
  • If the defect is only partial, the portion of the field with the defect can be used to isolate the underlying cause.
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    If the defect is only partial, then the portion of the field with the defect can be used to isolate the underlying cause.
  • It is particularly used to describe the lack of sight in one eye.
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    It is particularly used to describe the lack of sight in one eye.
  • Types of partial anopsia include hemianopsia, homonymous hemianopsia, heteronymous hemianopsia, binasal hemianopsia, bitemporal hemianopsia, superior hemianopia, inferior hemianopia, and quadrantanopia.
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    Types of partial anopsia include:
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Anopsia
Other namesAnopia
Scheme showing central connections of the optic nerves and optic tracts. (Lesions at different locations relate to different types of anopsias.)
SpecialtyNeurology

An anopsia, or anopia, (from Ancient Greek ἀν- (an-) 'without' 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. It is particularly used to describe the lack of sight in one eye.[1]


  1. Stanaszek, Walter F.; Stanaszek, Mary J.; Holt, Robert J.; Strauss, Steven (2020-06-29). Understanding Medical Terms: A Guide for Pharmacy Practice (2 ed.). Routledge. doi:10.4324/9780429273032. ISBN 978-0-429-27303-2.