Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Adjective: lynx-eyed  'lingk,sId
  1. Having keen eyesight; quick to notice visual details
    "The lynx-eyed ranger spotted the bird a mile away";
    - Argus-eyed, hawk-eyed, keen-sighted, quick-sighted, sharp-eyed, sharp-sighted, eagle-eyed

See also: sighted