In his vision of the throne of God, the prophet Ezekiel described the vesica piscis formed by four intersecting circles as four wheels, "All four wheels were alike; each one shone like a precious stone, and each had another wheel intersecting it at right angles" (Ezekiel 1:16)
Wheel = Circle
Four wheels: four circles
Ezekiel described the relationship between the eye and vesica piscis, "The rims of the wheels were covered with eyes."
The eye-shaped structure of the vesica piscis depicts the human eye as a window or door into the cosmos where God dwells.
As a lens, the vesica piscis is a telescope revealing God and his throne. In Christianity, God is featured as Christ enclosed by a lens called aureole.
The aureole (the lens) is the human eye and God is Christ indwelling the human body. The human body is the microcosm of the cosmos and God in the cosmos can be visualised through the human eye.
The angel Raphael confirmed that the heart and liver of fish and the vesica piscis have medicinal properties. He said to Tobias, "cut open the fish and take out its gall, heart, and liver. Keep them with you, but throw away the intestines. For its gall, heart, and liver are useful as medicine." (Tobit 6:5) "NRSV"
Piscis means fish, vesica means bladder (gallbladder), and vesica piscis means "gallbladder of a fish".
In the alimentary system of vertebrates, the gallbladder is a small organ where bile is stored before it is secreted into the small intestine.
Humans have a blurred vision of God, hence the angel Raphael prescribed the vesica piscis as the cure to the eye defect. He said to Tobias, "And as for the gall, anoint a person's eyes where white films have appeared on them; blow upon them, upon the white films, and the eyes will be healed." (Tobit 6:9) "NRSV"
Curing the eyes with the gallbladder of a fish is putting vesica piscis into the eye to form the aureole in order to visualise God through the lens of the eye.
The kingdom of God is the cosmos inside the human body, and Christ enclosed by the aureole is God inside the human body visualised by the human eye. You see God in you through your own eyes whenever you view the image of Christ enclosed by the aureole.
"Behold, the kingdom of God is within you" (Luke 17:21) "KJV"
What you are reading right now is the kingdom of God inside a man - the same kingdom that is in you. It is published online in order for you to see and know what the kingdom looks like. You see God in you through the eyes of the man.
Don't go looking for God or the kingdom in the Middle East, Europe, or other parts of the world, "No one will say, 'Look, here it is!' or, 'There it is!'" (Luke 17:21). You are the Kingdom and the Kingship wherever you are if you know what the kingdom is about.
Behold, the promise of the coming of the Kingdom of God has been fulfilled. But you didn't see it coming because, "The Kingdom of God does not come in such a way as to be seen." (Luke 17:20).
The vesica piscis cures the eyes so that humans could see clearly the beauty and the splendour and the brilliance of the El Dorado inside them.
"The street of the city was of pure gold, transparent as glass." (Revelation 21:21).
El Dorado = City of Gold
As an El Dorado, you are the golden one.
Transparent: clear and visible
Glass: the screen of your computer or cell phone.
Transparent as glass: the Kingdom of God (the new Jerusalem) is as clear and visible as the information you are viewing on the screen of your cell phone or computer right now.