acuity

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++a·cu·i·ty /əˈkjuːəti/ noun [uncountable] formal the ability to think, see, or hear clearly 敏捷，敏锐，灵敏 A motorist needs good visual acuity. 驾车者需要良好的视敏度。

Examples from the Corpus

acuity• 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.• mental acuity• Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved.• 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.• Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity.• Visual acuity is often normal even when the field of vision is so poor that the child is registered as blind.visual acuity• Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved.• Here, visual acuity is not so sharp, nor is our ability to judge distances so good.• The amount of pigmentation tends to increase slightly with age up to adolescence and brings with it a gradual improvement in visual acuity.• In measuring visual acuity in this way, a figure which looks like a fraction is recorded.• The simplified scale in Figure 1 gives an indication of the range of vision as described in terminology based on visual acuity.• Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity.Origin acuity (1500-1600) French acuité, from Old French, from agu “sharp”, from Latin acutus; → ACUTE