What is "The Third Eye"?

[adrian]

could it be a form of higher knowledge (神通)?
Particularly, “Divine eye” (dibba-cakkhu, 天眼通), that is, knowing others’ karmic destinations.

What are the 6 types of higher knowledge (神通)?

We probably have come across the phrase 三明六通. So what are these six higher knowledge (神通)? https://en.wikipedia.org/wiki/Abhijñā Specifically, the six types of higher knowledges (chalabhiññā) are: “Higher powers” (iddhi-vidhā, 神足通), such as walking on water and through walls; “Divine ear” (dibba-sota, 天耳通), that is, clairaudience; “Mind-penetrating knowledge” (ceto-pariya-ñāṇa, 他心通), that is, telepathy; “Remember one’s former abodes” (pubbe-nivāsanussati, 宿命通), that is, recalling one’s own …

Frankly, I have not come across any mention of the 3rd eye in my studying of Buddhism. Maybe I have not done much reading on meditation. Still building my foundation