BJERRUM SCOTOMA Meaning and
Definition
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Bjerrum Scotoma refers to a specific type of visual field defect that commonly occurs in individuals with glaucoma. This condition is named after Danish ophthalmologist Christian Bjerrum, who first described it in the early 20th century.
A scotoma is a localized area of reduced or absent vision within the visual field. In the case of Bjerrum Scotoma, it typically manifests as a crescent or arc-shaped area of visual field loss in the mid-peripheral vision. The scotoma is most commonly found along the horizontal meridian, which is the line that horizontally divides the visual field into upper and lower halves.
Compared to other types of scotomas, the Bjerrum Scotoma has distinct characteristics. The arc-shaped defect is often relatively shallow, with better preserved vision towards the center of the visual field and progressively worsening vision towards the periphery. It may be accompanied by enlargement of the blind spot (optic nerve head) and other manifestation of glaucomatous optic neuropathy.
Bjerrum Scotoma is a significant clinical finding in the evaluation and monitoring of glaucoma patients as it helps to assess disease progression and guide treatment plans. Ophthalmologists perform specialized visual field tests, such as automated perimetry or Humphrey visual field analysis, to analyze the visual field and identify the presence and extent of Bjerrum Scotoma. Early detection and monitoring of this scotoma are crucial in managing glaucoma patients to prevent further visual loss and optimize treatment strategies.
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Etymology of BJERRUM SCOTOMA
The word "Bjerrum Scotoma" is named after its creator, a Danish ophthalmologist named Thorburn Bjerrum. Thorburn Bjerrum was known for his research on visual field defects, and he introduced and described the "Bjerrum Scotoma" in his work.
The term "scotoma" originates from the Greek word "skotōma", which means "darkness" or "hiding". In medical terminology, it refers to an area of partial or complete loss of vision within the visual field, typically due to disease or injury.
Therefore, the term "Bjerrum Scotoma" specifically honors Thorburn Bjerrum and his contribution to the understanding and classification of visual field defects.
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