Human Eyes Quiz

Why are people with blue eyes more sensitive to bright light?

• a) Their eyes are larger

  
  

• b) They have less pigment in their irises

•    c) They blink more often

•   d) Their pupils are always dilated

2. Approximately how many times does a person blink in a day?

  

•  a) 5,000 times

•  b) 10,000 times

•  c) 15,000 times

• d) 20,000 times

3. How does blinking help with memory?

•  a) It increases blood flow to the brainrve

•    b) It gives the brain a chance to process information

     

• c) It helps focus our vision

•    d) It stimulates the optic nerve

4. How many parts make up each human eye?

  

•  a) Over 1 million

•  b) Over 2 million

•    c) Over 3 million

•    d) Over 4 million

5. Why do doctors look at patients' eyes during check-ups?

•    a) To check eye color

•  b) To see blood vessels directly

•    c) To test vision

•    d) To check for cataracts

6. What helps our eyes change shape to focus on near or far objects?

  

•  a) The retina

•    b) The cornea

•  c) The ciliary muscle

•    d) The iris

7. How can weather affect our vision?

 

• a) It changes the color of objects

    

• b) It bends light differently

   

• c) It makes our eyes water more

   

•  d) It affects our depth perception

Human eyes can detect _____ million different colours. 👀 (use numbers)

9. What part of the eye has a unique pattern for each person?

   

• a) The pupil

   

•  b) The retina

     

• c) The iris

•    d) The cornea

10. What might happen to a person's pupils when they're lying?

•   a) They might get smaller

• b) They might get bigger

• c) They might change color

•     d) They might start twitching