ANNULAR SCOTOMA Meaning and
Definition
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An annular scotoma is a medical term used to describe a specific type of visual impairment characterized by a ring-shaped blind spot or dark area in the field of vision. This condition affects a person's ability to see clearly or completely in the affected area, while the surrounding vision remains intact. The blind spot is typically circular or doughnut-shaped, hence the term "annular," which comes from the Latin word "annulus" meaning ring.
Annular scotomas can be caused by a variety of factors, including retinal diseases, such as retinitis pigmentosa, where the light-sensitive cells in the retina degenerate. Other possible causes include macular degeneration, glaucoma, or optic nerve damage.
The presence of an annular scotoma may result in various visual disturbances, depending on its size and location. Individuals with annular scotomas may experience difficulty reading or recognizing objects within the affected area, as well as challenges with depth perception or peripheral vision.
Diagnosis of an annular scotoma typically involves a comprehensive eye examination, including visual field testing, which measures the extent and characteristics of the blind spot. Treatments for annular scotoma generally focus on managing the underlying condition responsible for the visual impairment. This may involve lifestyle adjustments, such as the use of assistive devices or adaptive techniques to navigate daily tasks.
In conclusion, an annular scotoma refers to a circular or ring-shaped blind spot in the field of vision, caused by various retinal or optic nerve disorders. It can result in visual difficulties in the affected area, but with intact vision in the surrounding regions.
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Ring s., a circular blank area surrounding the center of the field of vision.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ANNULAR SCOTOMA
- znnular scotoma
- snnular scotoma
- wnnular scotoma
- qnnular scotoma
- abnular scotoma
- amnular scotoma
- ajnular scotoma
- ahnular scotoma
- anbular scotoma
- anmular scotoma
- anjular scotoma
- anhular scotoma
- annylar scotoma
- annhlar scotoma
- annjlar scotoma
- annilar scotoma
- ann8lar scotoma
- ann7lar scotoma
- annukar scotoma
- annupar scotoma
Etymology of ANNULAR SCOTOMA
The word "annular scotoma" combines two terms: "annular" and "scotoma".
The term "annular" originates from the Latin word "annulus", meaning "a ring". It refers to something that is circular or ring-shaped. In medical terminology, it is used to describe a condition or shape that is characterized by a ring-like appearance.
The term "scotoma" has its roots in ancient Greek. "Skotós" translates to "darkness", and "-oma" is a suffix indicating a medical condition or a tumor. In this case, "scotoma" refers to an area of impaired or lost vision within the visual field.
Therefore, "annular scotoma" can be understood as a condition where there is a ring-shaped area of impaired or lost vision within the visual field. This term is commonly used in ophthalmology to describe specific visual abnormalities or defects.
Similar spelling word for ANNULAR SCOTOMA
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