No, it’s not an optical effect due to heavy drinking. 😄
Third eye: definition
The third eye is an energetic eye, located in the middle of the forehead.
It is the center of thought, connected to the pineal gland.
It corresponds to the 6th chakra, which regulates the energy of concentration and imagination.
The physical eyes see matter, the third eye sees beyond appearances.

3rd eye closed
When the mind is dominant, the 3rd eye is closed.
This does not mean that the 6th chakra is blocked.
Children are born with the third eye open. However, when they are guided by ego-controlled adults, they will gradually abandon this function.
The emphasis on logic and reason leads to the abandonment of intuition.
A dormant 3rd eye favors :
- Pessimism.
- Confusion.
- Cynicism.
- Parasitic thoughts.
- Adherence to beliefs.
It is often obstructed by fears of :
- Not understanding.
- Losing control.
- Seeing the subtle worlds.

3rd eye open
When the third eye opens, we become aware of the illusion of separation.
We are not just a physical body, separated from the rest of the world. We are beings of light inhabiting a sacred temple.
We open ourselves to the invisible.
The energy of the inner eye promotes :
- The big picture.
- Enlightened vision.
- Wisdom.
- Self-knowledge.
- Intuition.
- Extrasensory abilities.
The development of the 3rd eye allows to see visions, and to intuitively obtain answers to questions.
When it is fully open, we can see the subtle worlds and other dimensions.
How to open my third eye?
Fortunately, it is possible to awaken the third eye.
It is blocked by many emotions.
Working on oneself allows an energetic and spiritual awakening.
Thanks to emotional transmutation, it is possible to gradually free oneself from the ego.
Thus, the 3rd eye will open naturally, when it is ready. There is no need to force it.
It is only the ego that wishes to open the third eye.

Conclusion
What is the 3rd eye?
It is the eye that sees beyond the veil of the ego.
Propelled by the energy of the sixth chakra, it opens a window on the invisible.
The opening of the third eye enhances receptivity.