field of vision

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field of vision

n. pl. fields of vision

field of vision

Etymology: AS, feld + L, visio, seeing
the area of space in which objects are visible at the same time when the eye is fixed and the face is turned so as to exclude the limiting effects of the orbital margins and nose.


1. An open expanse of land.
2. A discipline or an area of study.
3. A region of space in which a given force operates or a given condition exists.
4. A place of natural conditions, as opposed to a controlled environment, such as a laboratory or a hospital.

auditory field

The spatial region in which a given person can hear sounds.

cortical field

A segment of the cerebral cortex that carries out a given function. For example, the front of the parietal lobe -- the postcentral gyrus -- can be called a primary somatosensory field, and the parietal cortex farther back can be called an association field.

dry field

A colloquial term for a bloodless surgical field in which the surgeon's vision is not obscured.

electric field

The region in space in which the attractive or repulsive effects of a given electric charge have an effect.

electromagnetic field

Abbreviation: EMF
The region in space in which the photons produced by moving electric charges have an effect. EMFs can be produced by power lines, radio waves, and microwaves. The energy produced in an EMF increases as the frequency of the photons increases, and EMFs produced by very high frequency photons (e.g., xrays and gamma rays) are sufficiently energetic to induce cancer.

eye field

Any region of the cortex concerned with sensation from or movement of an eye.

field of fixation

The widest limits of vision in all directions within which the eyes can fixate.

field of Forel

One the layers of axons -- many originating in the globus pallidus -- that form the lower (inferior) border of the thalamus in the brain. Together, the axons and neighboring neuronss are called the subthalamic reticular nucleus.
Synonym: Forel's field, prerubral field

free field

A space in which there are no surfaces that reflect specific frequencies of sound.

gradient-induced electric field

An electric field that may surround an object placed in a rapidly changing magnetic environment, such as one generated by a magnetic resonance imaging device.

gravitational field

The region in space in which the attractive effects of a given mass have an effect.

hand field

Any region of the cortex concerned with sensation from or movement of a hand.

heart field

The region of the embryo destined to produce the heart.

high-power field

The portion of an object seen when the high-magnification lenses of a microscope are used.

hippocampal field

Any of the three contiguous, but histologically distinguishable, sheets of cells that form the cortex of the hippocampus; the fields are usually called CA1, CA2, and CA3.

low-power field

The portion of an object seen when the low-magnification lenses of a microscope are used.

lung field

The region in the body containing a lung. Often, 'lung field' refers to the section of a medical image (e.g., chest xray) that shows a lung.

magnetic field

The space permeated by the magnetic lines of force surrounding a permanent magnet or coil of wire carrying electric current.

prerubral field

Field of Forel.

pulsing electromagnetic field

Abbreviation: PEMF
An alternating electrical current used to produce an electromagnetic field. This may induce healing when applied to a fractured bone. The field is applied noninvasively to the affected limb. It may be moderately helpful in treating bony nonunion. See: diathermy

receptive field

A description of the effective stimuli of a given neuron. For sensory receptor neurons, the receptive field is the type of effective stimulation (e.g., light, sound, mechanical pressure) and the range of sensitive locations (e.g., center of visual field, left auditory field, tip of right thumb).

sterile field

A body surface, along with surrounding drapes or towels, within which an operation may safely take place without introducing potentially hazardous microorganisms into a patient.

Patient care

The field is prepared by meticulously washing and scrubbing the patient on whom an operation will be performed with disinfectant solution. Sterile drapes and towels are placed over the patient to cover any unprepared skin or clothing with sterilized fabric. All surgical instruments that enter the operative theatre are cleansed according to decontamination and sterilization practices. Finally, all surgical personnel scrub for prescribed time periods with disinfectants before entering the operating room. They must wear sterile gloves, gowns, masks and shoe covers and replace these if any of them contact nonprepared items during surgery.

surgical field

The area in which an operation is performed. This field is prepared and covered to maintain sterility during operations.

useful field of view

Abbreviation: UFOV
A test of visual attention that measures the space in which an individual can receive information rapidly from two separate sources. It is a strong predictor of accidents in older drivers. Training can expand the useful field of view and increase the visual processing speed of an elderly person.

field of vision

Visual field.
Enlarge picture

visual field

The area within which objects may be seen when the eye is fixed.
Synonym: field of vision See: illustration; perimetry
References in periodicals archive ?
Looking closely at the detailed etchings of Callot's work on the catastrophic effects of the Thirty Years War, Low expands his field of vision to include an examination of his own work, of the role of the artist in wartime, and of the epistemological implications of representational images in Western culture.
Called "target lock," it means that the aggressive pursuit of a target can often blind the pursuer to everything else in his field of vision.
It unites us with the countless generations of believers who found meaning in everything that passed within their field of vision.
Ophthalmoscopy checks the optic nerve at the back of the eye; Perimetry assesses the field of vision and Tonometry measures the pressure of the eye.
Morris' other novels include The Field of Vision (1956) and Ceremony in Lone Tree (1960), books that describe the failed lives of a number of people from a small Midwestern town; the paired novels, Fire Sermon (1971) and A Life (1973); The Fork River Space Project (1977); and Plains Song, for Female Voices (1980).
Writing over two decades ago in The Pursuit of Loneliness, Philip Slater identified a social current he dubbed the "Toilet Assumption" According to Slater, this was the seemingly universal belief that "unwanted unwanted difficulties, unwanted complexities and obstacles will disappear if they are removed from our immediate field of vision.
NRT's device has a field of vision from 12 to 30 in.
We should increase our field of vision to take in the world.
00 Doncaster 1pt win at 4-1 generally Field OF Vision 3.
Fit for purpose: Optimising your field of vision and being able to see as widely and clearly as possible is essential while driving.
In addition, MOLMC has also upgraded one of its two owned simulators with an enlarged screen that replicates the field of vision from the bridge as well as the addition of a Dynamic Positioning System (DPS).