clear-sighted
1. [ adjective ] having sharp clear vision
Related terms: sighted
2. [ adjective ] mentally acute or penetratingly discerning
Synonyms: perspicacious clear-eyed
Examples:

"too clear-eyed not to see what problems would follow" "chaos could be prevented only by clear-sighted leadership" "much too perspicacious to be taken in by so spurious an argument"

Related terms: discerning