Vision

What is it?

The term “types of vision” can be understood in different contexts — anatomical, physiological, psychological, and even spiritual or philosophical. Let’s explore the main categories with examples like coherent vision, and others.


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🧠 1. Physiological Types of Vision (Biological / Sensory)

These are based on how the eyes and brain perceive and process visual input:

1.1 Monocular Vision

Vision using one eye.

Limited depth perception.

Example: Many birds or fish.


1.2 Binocular Vision

Vision using both eyes together.

Allows for depth perception (3D vision).

Humans and most mammals have this.


1.3 Stereoscopic Vision

Special case of binocular vision — both eyes see slightly different images, brain merges them.

Gives sense of depth and distance.

Used in 3D movies, VR, etc.


1.4 Peripheral Vision

Side vision — outside the central focus.

Helps with motion detection and awareness.


1.5 Scotopic Vision (Night Vision)

Vision under low light.

Rod cells active, no color.


1.6 Photopic Vision (Day Vision)

Vision in bright light.

Cone cells active — sharp, colorful vision.


1.7 Mesopic Vision

In between scotopic and photopic (twilight).

Both rods and cones work partially.



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🧬 2. Neurological / Functional Vision Types

These describe how the brain interprets visual input.

2.1 Coherent Vision 🧠

Vision that is logically integrated, meaningful.

The brain combines raw input with memory, attention, and understanding.

Example: Recognizing a friend in a crowd.

It requires consciousness + memory + focus.


2.2 Unconscious Vision (Blindsight)

A rare condition where people can react to visual stimuli without consciously seeing them.

Caused by damage to the visual cortex.

Shows that vision can exist without awareness.


2.3 Foveal Vision

High-resolution central vision (from the fovea part of retina).

Used for reading, recognizing faces.


2.4 Tunnel Vision

Seeing only the central field — peripheral vision lost.

Caused by glaucoma, trauma, or stress.



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🧘‍♀️ 3. Psychological / Meditative Vision Types

From the standpoint of consciousness or yogic tradition, vision can be external or internal.

3.1 Drishti (Focused Meditative Gaze)

Yogic gaze technique — like focusing on nose tip, third eye, candle (Trataka).

Enhances concentration, calms mind.


3.2 Antar Drishti (Inner Vision)

Inward seeing — visualizing mentally.

Often occurs during meditation or spiritual practice.

Associated with intuition or divine insight.


3.3 Chitta Vision (Mind-Generated)

Dreams, hallucinations, memories — visualized inside the mind.

Consciousness sees through mind instead of eyes.



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🧿 4. Pathological Vision Types (Medical Conditions)

These are disorders or variations of normal vision:

Type Description

Color blindness Inability to see some colors (cones defective)
Double vision (Diplopia) Seeing two images of one object
Blurred vision Lens or retina problem
Tunnel vision Limited visual field
Macular degeneration Loss of central vision



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🧘 Summary Table

Type of Vision Description Example / Role

Monocular One eye only Simple depth
Binocular Both eyes together 3D vision
Stereoscopic Slightly different images merged Depth
Scotopic Low light (rods) Night
Photopic Daylight (cones) Color vision
Peripheral Side field Motion alert
Coherent Integrated by consciousness Recognizing scene
Drishti Yogic focused gaze Meditation
Antar Drishti Inner seeing Visualization
Tunnel Vision Limited field Pathological
Chitta Vision Mental image (dream/hallucination) Imagination



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Would you like a visual diagram showing this categorization? Or an explanation of how coherent vision forms in the visual cortex?