Drishti Bhoga means eating with, seeing with the eyes. Both Sri Ramakrishna and Mashaarada have had this mystical experience. They say that a ray of light comes out from the deity's eyes when food is offered properly. This is a part of the ritualistic puja technology. And devotees, they feel it. Once the food is offered and it becomes prasada, it is qualitatively different,. I mean, I can't explain it, but it is the feeling of many devotees.
Swami Sarvapriyananda teaches Chapter 9 Verses 26-28 of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).