The Sight By Eva Guzmán 6ºA

Index1) Characteristics

and function of the eyes.

2) Parts of an eye

3) How does the eye works

4) Activities

• Your sense of sight

lets you see things

with your eyes. Your

eyes can detect

information about

the shape, colour

and location of

things around you.

The eyes have got

diferent colors

such us blue,

brown or green.

Characteristics and

functions of

the eyes

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Parts of an eyeInterior

The cornea: is a transparent

layer of cells. It covers and

protects the iris and the pupil.

The lens: is behind the pupil

and the iris. It focuses light on

the retina.

The iris: is the colored part of

the eye, around the pupil. It's

made of muscle fibers that

open and close the pupil.

The pupil: is a small hole that

lets light go into the eye.

The retina: has got a thin

layer of optic cells that

detect light and colours.

These optic cells send

information to the optic

nerve.

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How the eye works

1) Light goes into the eye

through the pupil. Then

it passes through the

lens.

2) The lens projects an

upside down image

onto the retina. The

optic cells in the retina

detect the light and

colours. Then they send

nerve impulses to the

optic nerve

3) The optic nerve transmit the nerve

impulses to the brain.

Finaly, the brain

interprets the impulses.

It also turns the image

the right way up again.

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Activities of the sight

1. Parts of an eye2. Complete