Yogi: As a beginner yogi, can I open my eyes while practicing sitting meditation or walking meditation?

Sayadaw: Yes, for both sitting and walking meditation.

Yogi: I will have my eyes half open while walking.

Sayadaw: You can have your eyes fully open. Meditation is the work of the mind; the mind is being aware.

So, whether you open your eyes or close your eyes or half open your eyes, it really doesn’t matter so long as your mind observes.