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1 sie 2008 · We offer an explanation of the reading impairment in patients with unilateral homonymous visual field disorders and clarify its functional and anatomical bases. The major focus of our review is on visual information processing, visuospatial attention and eye-movement control during reading.
Across studies, a consensus value for the critical print size for normally sighted readers is 0.2° x-height (Legge, 2007). At a viewing distance of 40 cm (16 inches), Times New Roman type, with an x-height fraction of 0.45 and a visual x-height of 0.2°, is equivalent to a physical body size of 9 points.
2 lis 2007 · The visual information 'seen' by the temporal retina travels straight back down the same side. As a result all the visual information from the right half of the visual world is collected by the left side of the brain. And vice versa. Only practical to assess quadrantic field loss.
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 lis 2023 · Typically, distance and near acuity are related so that a distance visual acuity 0.00 logMAR corresponds to a near reading font size of 3.7-point print at 40 cm. However, it is also important to consider optimum font size that can be read comfortably, without reducing reading speed or causing excessive strain, to ensure that students with a ...
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.
The Visual Field. Under normal daylight (photopic) conditions, the smallest or least intense visible objects are only seen in the central region of the visual field. In the periphery, objects must be larger or more intense to be identified.
