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At a reading distance of 40 cm, the mean headline size was 0.31° of visual angle, well above the critical print size, but the mean text size was 0.19°, slightly below the critical print size, and the smallest text size was 0.16°, substantially below critical print size.
Look at the pattern. Look at the GHT, mean deviation, VFI, and pattern standard deviation. Compare to the previous visual fields. The visual field test is among the most important tests to learn to interpret as you begin your career in ophthalmology. Learn about the top 5 most common fields!
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.
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 ...
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.
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.
15 lut 2013 · Evaluating visual field results from any perimeter can be confusing and daunting at times, especially when attempting to cohesively link all the data together. Good interpretation skills start with a methodical assessment of several key plots, graphs and indices.
