The name of the practice is Lhatong, which can be translated as “further seeing” from Tibetan. Lhatong is traditionally practised with eyes open, focusing on the plane about 1.5 metres in front of you.
for - Buddhism - TIbetan - Dzogchen practice - Lhatong - arising forms are seen as empty and relational, alive, not isolated - from Medium article - Heart Sutra and the nyams of Dzogchen - Aleander Vezhnevets - 2022, Sept 7