open eyes to
open (one's) eyes to (someone or something)
1. To see or realize the truth about something. Open your eyes to reality, Stan—they're just using you for cheap labor!
2. To cause one to see or realize the truth about something. The documentary really opened my eyes to the conditions in that country.
open someone's eyes to someone or something
Fig. to cause someone, including oneself, to become aware of someone or something. We finally opened our eyes to what was going on around us. The events of last night opened my eyes to Tom.