Eye See You. To see is to be blind in a particular way

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to see ⊷
is to be blind ⊶
in a particular way →

Eye See You

Every act of seeing hides a kind of blindness

Eye See You

Everything you see
passes → through →
the brain

Your brain stands between you and the world

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Light enters the eye

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the signal travels along the visual pathways through the thalamus to the visual cortex

the retina processes part of the information while still inside the eye

Photoreceptors turn it into electrical signals

passes through the cornea and the lens

focuses on the retina

the brain links it to context, attention and past experience

There is a place in every ∴ eye
that cannot see ⊹

Each eye carries its own small blindness

↳ Where the optic nerve
leaves the eye, the retina has no photoreceptors. This area is called the blind spot, and no information from it reaches the
visual system

Take → the test

Try it yourself

↳ Close one eye, look at the circle opposite your open eye
and slowly move closer to the screen

At some point, the circle on the side of your open eye will disappear. Yet no hole will appear in your field of view

The visual system fills in the background, and with both eyes open, the field of one eye covers the field of the other

Your gaze never stands still

Our eyes are
always ↺ moving

The eye doesn’t move smoothly
It jumps: several times a second, the gaze leaps from one point to another
These jumps are called saccades

You go blind thousands of times a day

and never once notice it

↳ During each jump, the image on the retina blurs, and sensitivity to some visual signals briefly drops. You don't see these frames, yet the world doesn't jerk or blur.

The brain
fills ✑ in the gaps

The rest is drawn in

↳ A blind spot, a hidden part of an object, an ambiguous silhouette — the visual system constantly works with incomplete information. It fills in the missing areas based on context. This is called perceptual filling-in.

Nothing is broken. It's being built

It’s not a malfunction
This is assembly

↳ There are no empty places in the field of view: where information is missing, the most likely version appears. That's why optical illusions work even with healthy eyes.

Vision→began with sensitivity to light ⚉

First came light, and only then the eye

Where vision is no longer needed, eyes disappear. In caves, on the ocean floor, underground

The reverse path

The way back

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Lens eye

A transparent lens covers the opening, and the picture becomes sharp

A lens takes shape

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Camera obscura

The pit narrows almost to a point, leaving a tiny opening. Passing through it, light forms something like a picture for the first time. Blurry and dim, but made of shapes now, not spots

A dark chamber

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The patch folds in half and a pit appears. With it comes a sense of where the light is coming from

A cupped eye

Pit eye

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Eye spot

Cells gather together. There is no vision yet, but there is light and dark. For a creature that once could tell nothing apart, this is already a whole new world

A light-sensing patch

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Pigment cell

A single pigmented cell

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Pigment appears inside a single cell. This small shift is enough to tell, for the first time: here is light, and here is not

↳ Some vertebrates have a pineal complex whose structures can sense light directlyю

The third eye became ▫︎
a symbol of what lies beyond sight

Humans have kept a related structure — the pineal gland. It lies deep inside the brain and helps regulate circadian rhythms, including through the production of melatonin. Light affects this system through the retina.

↳ choose your vision

The third eye became ▫︎
a symbol of what lies beyond sight

Humans have kept a related structure — the pineal gland. It lies deep inside the brain and helps regulate circadian rhythms, including through the production of melatonin. Light affects this system through the retina.

↳ choose your vision

↳ Hence the image: an organ tied to light, yet lying beyond ordinary sight. Across cultures, it was credited with the power to see the hidden and sense what two ordinary eyes cannot. Between an organ that senses light and the image of an eye that sees more than a human, there is still room for myth.

And all that's left is a quiet sense: I see

In the end, there
is only one simple feeling:
I can see it

↳ It all happens so naturally that the process itself is almost impossible to notice.

We think of ⚆ vision as seeing a finished world

It feels as if we simply look at a world that is already there. But between light and perception lie a dozen stages, and at each one something is added, discarded or interpreted.