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 |
| 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 |
| 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 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 |
| vision | a religious or mystical experience of a supernatural appearance, he had a vision of the Virgin Mary |
line of sight
line of vision | an imaginary straight line along which an observer looks |
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 impairment
visual defect
vision defect
visual disorder | impairment of the sense of sight |
| tunnel vision | visual impairment involving a loss of peripheral vision |