Search results
15 cze 2020 · Visual field (VF) testing, although sometimes described as “torturous” by our patients, can be gratifying (and important) to interpret as an ophthalmologist, especially when done systematically. This article provides quick pearls and a framework by which you can conquer interpretation of VFs and points you in the direction of relevant ...
12 gru 2015 · Visual fields are often described to be within x degrees of fixation or expressed as a diameter such as “central 30°,” which would correspond to a circle with a 30° radius from fixation. It’s helpful to know the generally accepted “normal” visual field extent (not factoring visual sensitivity), which corresponds to the retinal anatomy.
29 paź 2024 · Field of View is an angle which depends on the focal length and sensor size, but the calculator also computes dimensional Field of View sizes (width, height, or diagonal fields) at some specific distance, like at the subject distance, and another, like at a background distance.
A normal visual field extends approximately 100° temporally (laterally), 60° nasally, 60° superiorly, and 70° inferiorly [2]. A physiologic scotoma (a blind spot) exists at 15° temporally where the optic nerve leaves the eye. Definitive location varies slightly on an individual basis.
Normal limits. The classical image on the shape and size of the visual field by Harry Moss Traquair in his book Clinical Perimetry (1938; modified to show the essentials). It shows that the visual field is considerably larger on the temporal side than the often quoted 90° extent. Similar limits were already reported in the 19th century.
Definition. The field of vision is that portion of space in which objects are visible at the same moment during steady fixation of gaze in one direction.
Questions. Visual Field. In A1.4 Monocular visual field, how did central and peripheral vision differ in their sensitivity to shape, color, and motion?
