The visual field is uneven. It is not uniform and has its maximum definition in its central part.
Harry Moss Traquair describes in 1927 that our visual field as "an island of vision or hill of vision surrounded by a sea of blindness". The 'island of vision' corresponds to a sudden change of definition we have. Its empirical elliptical limits in the longest (horizontal) axis, are our Blind Spots.
'La Lumière à Sénanque' (The Light in Sénanque) is a chapter of 'Cîteaux commentarii cistercienses' publication of the Cistercian Order 1992. Its author, Kim Lloveras i Montserrat, argues that in the Romanesque age, people were aware of the particularities of our blinds spots as horizontal limits of the central good vision. Further, they know that more than a change in definition there is a strong change of perception of space. The person, the observer feels inside the central area and understands their external as 'their enveloping'. With this assumption, we can predict in what specific point the observer comes into or out to a concrete space (for example, into the apse). It is to say that it becomes a very helpful instrument of architectural design. They used a good vision cone with the apex is in the eyes of the observer, with a circular cross-section, whose diameter, like H.M. Traquair, is defined by the outer limits of blinds spots. They used a circular cross-section because they think that the good central vision has a circular form, probably by the belief that the circumference is more perfect than a ellipse.
In 2008, proposed by Kim Lloveras i Montserrat, takes place the 'experience of the cone of good vision' at the 'School of Architecture of Barcelona' of the Polytechnic University of Catalonia. It is done with a large ellipse TK (theoretical ellipse very similar that proposed by H.M. Traquair for limits of his vision island). Its height is 3.10 m (twice of the high of the vision person) and its major axis has 3.94 m. It is from a point on the ground, previousl (located at 6.38 m), that the Observer of experience (with a normal vision) has the feeling of entering into the ellipse.
Our 'good vision cone' (which contains the 'island of vision') is really the zone of our vision with little deformation and also the limit in which we feel inside.
Other articles related to "visual field, field, visual, visual fields":
... This arrangement allows the left half of the visual field to end up on the right side of the brain and the right half of the visual field to locate to the left side ... These nasal fibers carry information from the temporal visual field ... Similarly, the temporal fibers transmit images from the nasal field ...
... to surgically decompress the pituitary gland is complex and mainly dependent on the severity of visual loss and visual field defects ... If visual acuity is severely reduced, there are large or worsening visual field defects, or the level of consciousness falls consistently, professional guidelines ... Those with relatively mild visual field loss or double vision only may be managed conservatively, with close observation of the level of consciousness, visual fields, and results of routine ...
... showed that the incidences of reversed rotation were independent in different parts of the visual field ... is inconsistent with discrete frames covering the entire visual scene ... rotation of a radial grating in one part of the visual field was independent of superimposed orthogonal motion in the same part of the visual field ...
... The lilac chaser illusion combines three simple, well-known effects When a visual event occurs briefly at one place in the visual field, and then a similar event occurs ... The visual events in the lilac chaser initially are the disappearances of the lilac discs ... The visual events then become the appearances of green afterimages (see next) ...
... 'Swedish interactive thresholding algorithm is a method to test for visual field loss, usually in glaucoma testing or monitoring ... It is combined with a visual field test such as standard automated perimetry (SAP) or short wavelength automated perimetry (SWAP) to determine visual fields in a more efficient manner ... can be seen at various points in an individual eye's visual field ...
Famous quotes containing the words field and/or visual:
“They talk about a womans sphere,
As though it had a limit.
Theres not a place in earth or heaven.
Theres not a task to mankind given ...
Without a woman in it.”
—Kate Field (18381896)
“I may be able to spot arrowheads on the desert but a refrigerator is a jungle in which I am easily lost. My wife, however, will unerringly point out that the cheese or the leftover roast is hiding right in front of my eyes. Hundreds of such experiences convince me that men and women often inhabit quite different visual worlds. These are differences which cannot be attributed to variations in visual acuity. Man and women simply have learned to use their eyes in very different ways.”
—Edward T. Hall (b. 1914)