Eyes Works

     Eyes Work

All the different parts of your eyes work together to help you see.

First, light passes through the cornea (the clear front layer of the eye).

Some of this light enters the eye through an opening called the pupil (PYOO-pul).

Next, light passes through the lens (a clear inner part of the eye).

The lens works together with the cornea to focus light correctly on the retina.

When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals.

These electrical signals travel from the retina through the optic nerve to the brain.

Then the brain turns the signals into the images you see.

Humans have two eyes but the final image obtained is one.

Both eyes are used for gathering information about our surroundings.

  :Unique Eye:

:Eyes Detect 36,000 Pieces of Info an Hour.

:If you're awake for 16 hours a day, that's more than 576,000 pieces of information.

:Your eyes aren't actually handling the processing though.

    :How do we see color?

:Light travels into the eye to the retina located on the back of the eye.

:The retina is covered with millions of light sensitive cells called rods and cones.

:When these cells detect light, they send signals to the brain.

:Cone cells help detect colors.