1. clear-sighted, sighted (vs. blind)

usage: having sharp clear vision

2. clear-eyed, clear-sighted, perspicacious, discerning (vs. undiscerning)

usage: mentally acute or penetratingly discerning; "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"

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