stultification
constipation
impairment deadening | the act of making something futile and useless (as by routine) |
| impairment | damage that results in a reduction of strength or quality |
visual display unit
VDU | (British) British term for video display |
appearance
visual aspect | outward or visible aspect of a person or thing |
| visual property | an attribute of vision |
| visual range | distance at which a given standard object can be seen with the unaided eye |
| visual system | the sensory system for vision |
| visual cell | one of the cells of the retina that is sensitive to light |
visual area
visual cortex | the cortical area that receives information from the lateral geniculate body of the thalamus |
striate cortex
striate area
first visual area
area of Brodmann
Brodmann's are | the part of the occipital cortex that receives the fibers of the optic radiation from the lateral geniculate body and is the primary receptive area for vision |
imagination imaginativeness
vision | the formation of a mental image of something that is not perceived as real and is not present to the senses, popular imagination created a world of demons, imagination reveals what the world could be |
sight
vision visual sense
visual modality | the ability to see, the visual faculty |
| achromatic vision | vision using the rods |
acuity visual acuity
sharp-sightedness | sharpness of vision, the visual ability to resolve fine detail (usually measured by a Snellen chart) |
| binocular vision | vision involving the use of both eyes |
| central vision | vision using the fovea and parafovea, the middle part of the visual field |
color vision
chromatic vision
trichromacy | the normal ability to see colors |
| distance vision | vision for objects that afeet or more from the viewer |
| foveal vision | vision with the fovea |
| monocular vision | vision with only one eye |
| near vision | vision for objects feet or closer to the viewer |
night vision
night-sight
scotopic vision
twilight vision | the ability to see in reduced illumination (as in moonlight) |
daylight vision
photopic vision | normal vision in daylight, vision with sufficient illumination that the cones are active and hue is perceived |
| peripheral vision | vision at the edges of the visual field using only the periphery of the retina |
stereoscopic vision
stereoscopy | three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina |
visual perception
beholding
seeing | perception by means of the eyes |
| visual space | the visual perception of space |
| vision visual sensation | the perceptual experience of seeing, the runners emerged from the trees into his clear vision, he had a visual sensation of intense light |
| vision | a vivid mental image, he had a vision of his own death |
visual percept
visual image | a percept that arises from the eyes, an image in the visual system |
visual field
field of vision
field of regard | all of the points of the physical environment that can be perceived by a stable eye at a given moment |
visual image visualization
visualisation | a mental image that is similar to a visual perception |
sight gag
visual joke | a joke whose effect is achieved by visual means rather than by speech (as in a movie) |
| visual communication | communication that relies on vision |
| visual signal | a signal that involves visual communication |
| vision | a religious or mystical experience of a supernatural appearance, he had a vision of the Virgin Mary |
damage
harm impairment | the occurrence of a change for the worse |
line of sight
line of vision | an imaginary straight line along which an observer looks |
dysosmia
parosamia
olfactory impairment | a disorder in the sense of smell |
visual aphasia
alexia
word blindness | inability to perceive written words |
| visual agnosia | inability to recognize or interpret objects in the visual field |
color blindness
colour blindness
color vision deficiency
colour vision deficiency | genetic inability to distinguish differences in hue |
diplopia
double vision | visual impairment in which an object is seen as two objects, diplopia often disappears when one eye is covered |
monochromacy
monochromatism
monochromatic vision
monochromia
monochromasy | complete color blindness, colors can be differentiated only on the basis of brightness |
| visual hallucination | illusory visual perception |
disability
disablement
handicap
impairment | the condition of being unable to perform as a consequence of physical or mental unfitness, reading disability, hearing impairment |
hearing impairment
hearing disorder | impairment of the sense of hearing |
visual impairment
visual defect
vision defect
visual disorder | impairment of the sense of sight |
| tunnel vision | visual impairment involving a loss of peripheral vision |
deterioration
impairment | a symptom of reduced quality or strength |