vision defect


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ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.vision defect - impairment of the sense of sightvision 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
Translations

vision defect

ndifetto della vista
References in periodicals archive ?
We have been looking to upgrade our vision defect detection systems for a few years.
If the squint is associated with some vision defect, and spectacles are required, your child will be referred to an optician.
In addition to this new service, Metal Cutting continues to offer cleanroom metrology, camera vision defect detection systems, robotic multi-stage ultrasonic cleaning stations and electromagnetic non-destructive eddy current metallurgical flaw detectors.
Three types of vision defect, including colorblind, low vision and visual field deficiency are examined by the system.
A right aferent pupillary defect is present along with a marked right colour vision defect.
Perhaps an aspiring David Beckham needs daily disposable contact lenses for sport, or a child with a colour vision defect hoping to become a train driver needs gentle advice about considering other options.
A child's parents and teacher knowing of a colour vision defect avoids concern over delays in colour naming and prevents the child from being corrected for choosing 'wrong' colours in artwork or having difficulties with puzzles.
What type of colour vision defect is indicated from the results shown in Image E?
In some studies, the presence of a colour vision defect has been associated with lower grades and poorer school performance.
The most important first step in minimizing problems from color blindness is to accurately identify the color vision defect.
Ideally, the test will not only identify the presence of a colour vision defect but will also grade its severity.
Sensitivity refers to the percentage of people who have a colour vision defect that are correctly detected by the test, whereas specificity is the percentage of people who have normal colour vision that are correctly diagnosed as normal.

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