PRESENTATION OUTLINE
FLOWERS, FACES, AND BUTTERFLY WINGS
HOW DO THEY WORK? HOW DO WE SEE?
WE HAVE TWO EYES IN FRONT OF OUR FACE
OUR EYELIDS BLINK TO PROTECT OUR EYES
WHEN WE OPEN OUR EYES, THE LIGHT SHINES THROUGH
THE CORNEA AND LENS BEND LIGHT
IN THE MIDDLE OF THE IRIS IS A HOLE, THE PUPIL
IN THE BRIGHT SUN, IT SHRINKS TIGHT
RODS AND CONES ABSORB LIGHT IN THE BACK OF OUR OUR EYES
THE OPTIC NERVE BRINGS MESSAGES FROM RETINA TO BRAIN
WE CAN RECOGNIZE FACES AND TELL WHO WINS A RACE
SOMETIMES WE NEED HELP TO SEE CLEARLY
WE READ LETTERS OR SYMBOLS ON A CHART
AFTER OUR EYE TEST, THE DOCTOR MAY SUGGEST
EATING CARROTS HELPS OUR SIGHT.
NOW WE KNOW HOW OUR EYES SEE
