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28 paź 2016 · The visual field is the portion of space visible to a single stationary eye. The normal visual field extends 90° temporally, 70° inferiorly, and 60° nasally and superiorly [ 1 ]. Visual field testing involves assessment of contrast threshold at multiple points in the field.
For each eye a normal visual field extends approximately 50⁰ superiorly, 60⁰ nasally, 70⁰ inferiorly and 90⁰ temporally from central fixation. The field of vision is restricted superiorly by the upper lid and/or the bony orbital rim, and nasally by the bridge of the nose.
29 sty 2015 · The total binocular field of view is 200 deg (w) x 135 deg (h). The region of binocular overlap is 120 deg (w) x 135 deg (h) ( WebVision ). The binocular foveal high-acuity part (central view) is about 6 degrees (5-15 degrees) .
In the realm of ophthalmology, sometimes, the sole focus for specialists is a single numeric value, such as normal corneal power, acceptable residual stromal bed levels, or specific anatomical reference values. Despite the advancement of search engines, procuring normal value ranges and their clinical implications remains a cumbersome task.
The monocular visual field (Figure 14.1) is that area of space visible to one eye ; can be mapped parametrically . Perimetry testing provides a detailed map of the visual field. The potential visual field is described as a hemisphere.
The normal (monocular) human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) from the vertical meridian in each eye, to 107 degrees temporally (away from the nose, or outwards) from the vertical meridian, and approximately 70 degrees above and 80 below the horizontal meridian. [7][1][8][9]
2 mar 2019 · The most effective visual field of a single eye is within 30° of fixation, where the clear visual image and color information can be provided, which is also a key area for modern visual field evaluation.
