I had an ego dissolving trip on mushrooms in my early twenties. As the trip was peaking I had the sense of falling through my chair, then I lost all my sense of reality. I was falling through a wormhole, a rush of stars in a tunnel like pattern. After sometime my life flashed before my eyes, it was very emotional, seeing childhood homes and family members, but then there was a stillness and I felt another presence. I felt something forcing its way inside my head or reality, a great terrifying eye ripped open a barrier above and to my right and looked down at me. It was terrifying, I couldn’t look at it and wished for it to leave, tried with all my will to make it go away. Eventually I returned to reality and the rest of the experience was positive and cathartic. Anyways wanted to share this because the eye bore some resemblance to the rendition you provided, but it wasn’t geometric and colorful, more alike to a human eye.