Meaning : Having very keen vision.
Example :
Quick-sighted as a cat.
Synonyms : argus-eyed, hawk-eyed, keen-sighted, lynx-eyed, sharp-eyed, sharp-sighted
Meaning : Keenly perceptive or alert.
Example :
Quick-sighted into the faults of the time.
Synonyms : sharp-eyed, sharp-sighted