Source : Webster's Revised Unabridged Dictionary (1913)

Lynx-eyed \Lynx"-eyed`\, a.
   Having acute sight.

Source : WordNet®

lynx-eyed
     adj : having very keen vision; "quick-sighted as a cat" [syn: {argus-eyed},
            {hawk-eyed}, {keen-sighted}, {quick-sighted}, {sharp-eyed},
            {sharp-sighted}]