visual_acuity
1. [ noun ] (physiology,ophthalmology) sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
Synonyms: sharp-sightedness acuity
Related terms: sight oxyopia
Similar spelling:   visual_aspect
  visual_agnosia
  visual_space
  visual_system
  visual_signal
  visual_cortex
  visual_joke
  visual_cell