Passage
For mine eyes have seen thy salvation,
For mine eyes have seen thy salvation,
Luke 2:28 Then took he him up in his arms, and blessed God, and said,
Luke 2:29 Lord, now lettest thou thy servant depart in peace, according to thy word:
Luke 2:30 For mine eyes have seen thy salvation,
Luke 2:31 Which thou hast prepared before the face of all people;
Luke 2:32 A light to lighten the Gentiles, and the glory of thy people Israel.
The verse centers on "mine", "eyes", "seen", and "salvation". It is saying that the verse draws attention to "mine" and "eyes", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 29's "Lord now lettest thou thy servant depart..." into verse 31's "Which thou hast prepared before the face...", so "mine" and "eyes" belong inside that flow. In Luke context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "mine" and "eyes" with trust shaped by these words, not by a vague optimism outside the passage.