sjónsviðs

Sjónsviðs is an Icelandic term that translates to "field of vision" or "visual field" in English. It refers to the entirety of the area that is visible to an eye at a single point in time. This encompasses everything an individual can see without moving their eyes or head. The sjónsviðs is typically measured in degrees and is often described as a horizontal and vertical range.

The sjónsviðs is crucial for navigation, object recognition, and spatial awareness. It can be affected by various factors, including the physical structure of the eye and brain, as well as lighting conditions and the presence of obstacles. Certain medical conditions, such as glaucoma or stroke, can lead to a reduction or loss of the sjónsviðs, a condition known as visual field defect.

Ophthalmologists and optometrists often assess a patient's sjónsviðs as part of a comprehensive eye examination. This process, known as perimetry, helps detect and monitor conditions that might impact vision. Understanding one's sjónsviðs is fundamental to comprehending how we perceive and interact with our surroundings.