Cómo vemos. Primera parte: los ojos

The video explains how the brain prioritizes vision over other senses and details the structure of the eye, including the cornea, pupil, iris, lens, and retina. It describes the retina's role in vision, the red-eye effect, and the functions of rod and cone cells. Finally, it covers how the optic nerve transmits visual information to the brain, which then processes it into vision.

Which part of the eye is responsible for controlling the amount of light that enters?

• Cornea

• Lens

• Retina

• Iris

What causes the red-eye effect in photographs?

• Color of the iris

• Reflection from the cornea

• Blood vessels behind the retina

• Light scattering in the lens

What is the primary function of rod cells in the retina?

• Detecting color

• Providing peripheral vision

• Controlling pupil size

• Focusing light

How do cone cells differ from rod cells in their function?

• They provide night vision

• They respond to color

• They control the iris

• They detect movement

What happens to light when it hits the receptor cells in the retina?

• It is focused by the lens

• It is reflected back out of the eye

• It is absorbed by the cornea

• It is converted into electrical impulses