Anopsia
Anopsia
Anopsia (pronounced: an-op-see-uh) is a medical term that refers to a condition characterized by a defect in, or loss of, vision. It is derived from the Greek words "an" meaning "without" and "opsia" meaning "sight".
Types of Anopsia
There are several types of anopsia, including:
- Hemianopsia: This is a type of anopsia where the vision loss is in half of the visual field. It is often caused by stroke, brain injury, or tumor.
- Quadrantanopsia: This is a type of anopsia where the vision loss is in a quarter of the visual field. It is often caused by stroke or brain injury.
- Homonymous hemianopsia: This is a type of anopsia where the vision loss is on the same side of both eyes. It is often caused by stroke or brain injury.
- Binasal hemianopsia: This is a type of anopsia where the vision loss is on the inner (nasal) half of the visual field in both eyes. It is often caused by compression of the optic chiasm.
- Bitemporal hemianopsia: This is a type of anopsia where the vision loss is on the outer (temporal) half of the visual field in both eyes. It is often caused by a pituitary tumor.
Causes of Anopsia
Anopsia can be caused by a variety of conditions, including stroke, brain injury, brain tumor, and optic nerve damage. It can also be a symptom of certain neurological disorders, such as Alzheimer's disease and Parkinson's disease.
Treatment of Anopsia
Treatment for anopsia depends on the underlying cause. It may include medication, surgery, or vision therapy. In some cases, the vision loss may be permanent.
See Also
External links
- Medical encyclopedia article on Anopsia
- Wikipedia's article - Anopsia
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski