Your eyes play an important role in your everyday life. They do everything from helping you with your job to aid you in watching for danger and are even responsible for helping you make memories. But how much do you really know about your eyes? Our eyecare centre in Langley challenges you to take this quiz to test your eye knowledge. Check your answers below and let our eye clinic in Langley know how many you got right!

Question 1: How many nerves connect the eye to the brain?

a. More than 100
b. More than 10,000
c. More than 1,000,000

Question 2: How many people around the world are blind?

a. 3.9 million
b. 39 million
c. 390 million

Question 3: How much does the average eyeball weight?

a. .25 oz
b. 2.5 oz
c. 25 oz

Question 4: How many colors can the human eye see?

a. 1 million
b. 10 million
c. 100 million

Question 5: What’s the oldest eye color?

a. Green
b. Blue
c. Brown

Answer 1: It’s c, more than 1,000,000! The eyes are intricately connected to our brains, which is part of the reason our eyesight is so vital to the process of making and store memories. Our brains process what our eyes “see,” so there is a lot of communication between the two. This series of nerves is so intricate and complicated that doctors cannot successfully reattach them to a new eyeball to restore sight (yet!).

Answer 2: The answer is b, 39 million. That’s according to the World Health Organization, who also reports that there are an estimated 246 million more that have some kind of visual impairment. A lot of these eye issues are treatable and many were preventable.

Answer 3: It’s answer a, .25 ounces. The average eye is also about one inch across, but most of the mass of your eye is hidden inside your skull and behind your lids. In fact, only about 1/6th of your eye is exposed.

Answer 4: The correct answer is b, 10 million. We’re pretty average as far as seeing colors go. Our faithful canine companions can only see shades in the range of two colors (blue and yellow). The mantis shrimp has four times the color receptors that humans do; imagine the colors they must see!

Answer 5: It’s true, not all eye colors have existed for the same amount of time. The answer here is c, brown. Scientists believe that humans all originally had brown eyes and that variations such as blue were introduced much later in human history.

What’s Your Eye Knowledge Score?

We’ll be impressed if you got all five of these questions right! Even answering one or two correctly is impressive. No matter how many you got wrong or right, though, it likely highlighted how wonderfully complex our eyes really are! Because they are so complex, we need to make sure they are getting the care that they need in order to stay healthy and provide us with the best possible eyesight. If it’s been a while since you’ve taken care of your eyes, get in touch with our team. We’ll set you up with an appointment in our Langley eye clinic and make sure you get the best care possible.