HOW DOES THE HUMAN EYE WORK?

WHY I CHOSE THIS TOPIC?

• I chose this topic because it sounded interesting to learn about the eye.
• I wanted to know how the eye specifically worked.

HOW IT WORKS!

• Vision begins when light rays are reflected of an object and enters the eye
• Once the light rays enter the eye, they go through the cornea.
• The cornea bends or refracts the rays that pass through the a round hole.
• The iris that surrounds the pupil ,opens and closes 
• When it opens and closes it makes the pupil bigger and smaller.

Fun facts!

• Eyes are composed of more than 2 million working parts.
• The average person blinks 12 times a minute.
• The human eye weighs approximately weighs 28 grams.
• Your eye will focus on about 50 things per second. 
• Eyelashes have an average life span of 5 months.