twentytwenty

Main Entry: twen·ty–twen·ty
Variant: or 20/20 /"twent-E-'twent-E/
Function: adjective
: having the normal visual acuityof the human eye that according to one common scale can distinguish at a distance of 20 feet characters one-third inch in diameter <twenty–twenty vision>

twenty-twenty or 20/20   (twěn'tē-twěn'tē)  Pronunciation Key  Having normal visual acuity. A person with twenty-twenty vision can see type as small as one-third of an inch at a distance of twenty feet.