# What is the visual field as a function of speed?

### What is the visual field as a function of speed?

Our capacity visual decreases when the speed increased. At 40 km/hour: the width of the field of human-readable vision is of 100°. At 70 km/hour: the width of the field of human-readable vision is of 75°. At 100 km/hour: the width of the field of human-readable vision is of 45°.

### Why is the field of vision narrowed when you pick up speed?

At 90 km/h, the visual field is halved because the human brain can only process so much information at a time. However, the more speed of the vehicle is higher and the more information the brain receives. It is therefore forced to eliminate several peripheral data.

### How do we detect our eye movements?

But on the periphery of our eyes, we detect movement incredibly well. With a screen filling their peripheral vision that updates at 60Hz or more, many people will report that they have a strong sense of physically moving.

### How big is an eye?

At best, the eye separates details of 0.33 mm at 1 m, or 3.3 mm at 10 m, or 3. m, etc. To reach this limit, it is still necessary that the points are very contrasted with respect to the background (two nearby stars, for example), which is almost never the case for everyday objects.

### Why can’t the eye make too fast movements?

Finally, because of retinal persistence, the eye cannot perceive movements that are too rapid. However, today it is still difficult to distinguish between what comes from the eye itself or from the post-processing carried out by the brain.

### What is the minimum angle of one eye?

Research has shown that a normal eye can separate points of light angularly separated by approximately 1′ of angle (one minute), which is equivalent to approximately 1/3000th of a radian. We will call (epsilon) this minimum angle. =1/3000 radians. At best, the eye separates details of 0.33 mm at 1 m, or 3.3 mm at 10 m, or 3. m, etc.,