visual defect

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Noun1.visual defect - impairment of the sense of sightvisual defect - impairment of the sense of sight  
amaurosis - partial or total loss of sight without pathology of the eye; caused by disease of optic nerve or retina or brain
amblyopia - visual impairment without apparent organic pathology
ametropia - (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia
aniseikonia - visual defect in which the shape and size of an ocular image differ in the two eyes
anorthopia - distorted vision in which straight lines appear curved
aphakia - absence of the natural lens of the eye (usually resulting from the removal of cataracts)
blindness, cecity, sightlessness - the state of being blind or lacking sight
color blindness, color vision deficiency, colour blindness, 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"
disability, disablement, handicap, impairment - the condition of being unable to perform as a consequence of physical or mental unfitness; "reading disability"; "hearing impairment"
day blindness, hemeralopia - inability to see clearly in bright light
hemianopia, hemianopsia - blindness in one half of the visual field of one or both eyes
quadrantanopia - blindness in one fourth of the visual field
metamorphopsia - a defect of vision in which objects appear to be distorted; usually due to a defect in the retina
moon blindness, night blindness, nyctalopia - inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
photoretinitis - damage to the retina resulting from exposure of the eye to the sun without adequate protection
detached retina, detachment of the retina, retinal detachment - visual impairment resulting from the retina becoming separated from the choroid in the back of the eye; treated by photocoagulation
scotoma - an isolated area of diminished vision within the visual field
tunnel vision - visual impairment involving a loss of peripheral vision
xanthopsia - visual defect in which objects appear to have a yellowish hue; sometimes occurs in cases of jaundice
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
"Tritanopia" is a visual defect characterised by the inability to discern which two colours?
Within twenty-four hours of hospital admission, he developed a visual defect in his left eye.
Overlaying various analyses--including pathlines, flow-front progression, and single contour--within the simulation software helped engineers visualize the flow velocity and identify the hesitation near the rim that was causing the flow-front speed to vary and resulted in a visual defect (Fig.
While school-based vision screening can bring to light concerns about timely treatment, other findings have suggested that screening too early can increase the number of false-positive referrals (those that do not have a visual defect but are deemed to have one upon visual screening).
Often there is a 'ring scotoma' or ring shaped visual defect where objects will disappear and come back as the eye moves around.
and we suspect that might be true for any kind of visual defect," Maurer pointed out.
VisionPro Surface combines a revolutionary new visual defect detection and classification technology with a simple user interface to enable accurate defect detection, classification, and surface texture assessment during the manufacturing process.
In glaucoma, for instance, the pattern of retinal thinning is nonspecific and fails to correlate with the visual defect. In Alzheimer's disease, retinal thinning appears to be primarily in the superior quadrant.
In glaucoma, the pattern of retinal thinning is nonspecific and fails to correlate with the visual defect.
Typically, we associate strokes with limb paralysis and impaired speech, but 20% of those who suffer from a stroke will end up with a visual defect called Hemianopia, a partial blindness caused by damage to part of the brain called the primary visual cortex.
Capobianco, who is nearsighted, had tried to get a job with DOS for several years and received "perfect scores" on the city employment exam, but the agency disqualified him because of his "visual defect." After undergoing cataract surgery in 1997, Capobianco contacted DOS and asked to be reconsidered.