Noun
Verb (する, intransitive)
1. enlightenment; spiritual awakening; opening one's eyes to the truth
esp. かいげん
2. reaching one's peak (as a performer, etc.); reaching the highest echelons
esp. かいげん
Noun
Verb (する, transitive)
3. gaining eyesight; restoring eyesight; opening the eyes
when read as "かいがん"