This is a measure of best corrected acuity or in other words the best acuity while wearing glasses or contact lenses- the best your eye can see.
Usually refers to the best a person can see on the standard eye chart with their most accurate refraction in glasses or the phoropter testing equipment.
See Best Corrected Visual Acuity.
Best corrected visual acuity. This is a measure of the best vision while wearing glasses or contact lenses.