Human Eye Physiology

Václav Hlaváč

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History of Eye Understanding

Plato, 427-347 B.C.inner fire in the eye + emanated ray

Epicurus, 341-270 B.C., replicas of the object into the mind

Galen, 130-200, physiological details, rays out and in

Alhazen, Arabic philospopher, 965-1040, idea of pinhole camera

Jonannes Kepler, 1571-1630, knew lens, put it into an initial theory close to current

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Human Visual System

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Visual Areas of the Human Cortex

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AB

12

C

E

D

V13/4

F

1

2

3

4

A

B

C

D

E

F

EmotionsRecognition of actions

Categorization

Recognition,objects in contextCalculation

Reading

Navigation, direction, obstaclesSaccade control

Pursuit control

Understanding, focus,manipulation control

Drawing, writing

Calculation

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Neuron

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Neuron 2

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Visual Fields

Rabbit Human

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Human Eye – cross section 1

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Human Eye – cross section 2

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Directional sensitivity

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Retina 1

Light path

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Retina 2

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Retina 3

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Rods and cones

Light path

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Inside the rod and the cone

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Cones under electron microscope

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Response to a light slit

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Iris - smoothing