English
eye-opening
From eye (noun) + opening (participle of the verb open).
Proto-Indo-European *h₃ekʷ- ‘eye’
Proto-Germanic *augô
Proto-West Germanic *augā
Old English ēage
Middle English e
English eye
Today it means
adj Very startling or shocking; engaging a person's full attention.
Language periods are conventional ranges, not dates for this word.
Etymograph / eye-opening