English > vision defect: 1 sense > noun 1, state| Meaning | impairment of the sense of sight. |
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| Synonyms | visual impairment, visual defect, visual disorder |
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| Narrower | amaurosis | partial or total loss of sight without pathology of the eye |
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| 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, sightlessness, cecity | The state of being blind or lacking sight |
| 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 |
| hemeralopia, day blindness | inability to see clearly in bright light |
| hemianopia, hemianopsia | blindness in one half of the visual field of one or both eyes |
| metamorphopsia | A defect of vision in which objects appear to be distorted |
| nyctalopia, night blindness, moon blindness | inability to see clearly in dim light |
| photoretinitis | damage to the retina resulting from exposure of the eye to the sun without adequate protection |
| quadrantanopia | blindness in one fourth of the visual field |
| retinal detachment, detachment of the retina, detached retina | visual impairment resulting from the retina becoming separated from the choroid in the back of the eye |
| 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 |
| Broader | disability, disablement, handicap, impairment | The condition of being unable to perform as a consequence of physical or mental unfitness |
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| Spanish | defecto visual, deficiencia visual, problemas de visión, trastorno visual |
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| Catalan | deficiència visual, problemes de visió |
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