单词	acuity
释义	acuitya‧cu‧i‧ty /əˈkjuːəti/ noun [uncountable] formal Word Origin WORD ORIGINacuity Origin: 1500-1600 French acuité, from Old French, from agu ‘sharp’, from Latin acutus; ➔ ACUTE Examples EXAMPLES FROM OTHER DICTIONARIES mental acuity EXAMPLES FROM THE CORPUS Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved. Frequent measurements of visual fields and acuity are obtained to detect optic nerve damage. It will be appreciated that the precise nature of the degree or defect in acuity or field of vision is highly individual. Jack was coming to respect my eye at least as much as he respected my legal acuity. Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity. The amount of pigmentation tends to increase slightly with age up to adolescence and brings with it a gradual improvement in visual acuity. The simplified scale in Figure 1 gives an indication of the range of vision as described in terminology based on visual acuity. Visual acuity is often normal even when the field of vision is so poor that the child is registered as blind. Collocations COLLOCATIONS FROM THE ENTRY► visual acuity  A motorist needs good visual acuity. COLLOCATIONS FROM THE CORPUSADJECTIVE► visual · Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved.· Frequent measurements of visual fields and acuity are obtained to detect optic nerve damage.· The simplified scale in Figure 1 gives an indication of the range of vision as described in terminology based on visual acuity.· The amount of pigmentation tends to increase slightly with age up to adolescence and brings with it a gradual improvement in visual acuity.· Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity.· In measuring visual acuity in this way, a figure which looks like a fraction is recorded.· Here, visual acuity is not so sharp, nor is our ability to judge distances so good. the ability to think, see, or hear clearly:  A motorist needs good visual acuity.
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