Beyond that, the genuine opening process can be extremely painful, and migraines last for months, making any random "Third Eye" internet achievement sound like a joke.
Simply opening Third Eye does not guarantee anything as its function is highly tied to both levels of meditation skill and level of Energy.
Opening Third Eye without energy work, and preparation is foolish, as you are draining yourself when it functions.
Running Third Eye requires a meditation skill; if you have random thoughts in your head, you can forget about having TE.
Developing Third Eye potential is done via a particular set of Visualization training. If you never did proper visualization, you may struggle here.
Third Eye is a part of Magic tradition training. We don't train in Magic to develop Third Eye, we train in Magic, and Third Eye develops on the way.
Most people who think they have the Third Eye open don't know what they are talking about. Usually, I am not concerned about shedding light on ignorance and delusion as it is not very practical knowledge to have. Those who seek true development will find teacher and will eventually get to this practice.