visual acuity
nounEtymology Compound of visual + acuity.
1
The sharpness of vision or sight.
- The Italian railroads require of their employes both eyes normal in regard to visual acuity, ocular refraction, perception of red and green, and visual field.1899, “Progress of medicine”, in The Memphis Lancet, page 216:
2
Strength of vision expressed on some definite scale.
- Myopia exceeding 6 D., provided the visual acuity exceed 1/4 for one of the eyes and 1/16 for the other, and there be no extended choroidal lesions.1896, Annales d'Oculistique, English edition, page 307: