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Test Your Eye Health Knowledge

What’s your eye-Q? Test your eye health knowledge with this fun, quick quiz and learn how to keep your eyes healthy for life!

Which vitamin is best known for supporting eye health?

Vitamin D plays an important role in bone health and immune function but is not specifically known for supporting eye health. Vitamin A is the vitamin that helps keep your eyes healthy and plays a big role in helping you see in low light. It also protects the surface of your eyes and keeps them moist.
That’s right! Vitamin A helps keep your eyes healthy and plays a big role in helping you see in low light. It also protects the surface of your eyes and keeps them moist.
Vitamin K is important for blood clotting and bone health but does not play a major role in vision or eye health. Vitamin A is the vitamin that helps keep your eyes healthy and plays a big role in helping you see in low light. It also protects the surface of your eyes and keeps them moist.
Not quite. Vitamin C supports immune health and helps the body absorb iron. While it has antioxidant properties that may support general health, it is not the most well-known vitamin for eye health. Vitamin A is the vitamin known for helping keep your eyes healthy and playing a big role in helping you see in low light. It also protects the surface of your eyes and keeps them moist.

What is the most common eye color worldwide?

Blue eyes are pretty rare around the world. They are more common in people with European ancestry. Brown eyes are actually the most common worldwide.
Green eyes are actually the rarest of all! Only a small number of people worldwide have them. Brown eyes are the most common worldwide.
Correct! Brown is the most common eye color around the world. It’s caused by a higher amount of melanin (a natural pigment that gives color to eyes and skin) in the eyes. People of all backgrounds can have brown eyes.
Hazel eyes are a mix of colors, usually green and brown, and are less common than brown. You’ll see them more in people who have European ancestors.

 

Which part of the eye controls how much light enters?

Try again. The retina is in the back of the eye and helps you see by turning light into signals your brain can understand, but it doesn’t control how much light enters your eye. The iris, the colored part of the eye, controls how much light enters by changing the size of your pupil.
You got it! The iris is the colored part of the eye. It controls how much light enters by changing the size of your pupil, kind of like a shutter on a camera.
Not quite. The cornea is the clear, outer layer at the front of the eye. It helps focus light but it doesn’t control how much light gets in. The iris, the colored part of the eye, controls how much light enters by changing the size of your pupil.
Not quite. The lens sits behind the iris and helps focus light onto the retina, but it doesn’t control how much light enters the eye. The iris is the part of the eye that controls how much light enters by changing the size of your pupil.

What is the point of eyelashes?

Eyelashes don’t have anything to do with contact lenses. In fact, eyelashes can sometimes get in the way when you’re putting contact lenses in! Eyelashes help keep stuff out of your eyes.
That’s right! Eyelashes act like tiny shields that help protect your eyes and help keep stuff out of your eyes.
While they do add flair to a good wink, eyelashes are really there to protect your eyes and keep stuff out, not for dramatic effect.
Cute idea, but nope! Eyelashes and eyebrows each serve their own protective purposes, but they’re not hanging out for social reasons. Eyelashes help keep stuff out of your eyes.

What is the best way to find out if you have an eye disease?

Many serious eye diseases have no symptoms in the early stages. Waiting could mean missing your chance to catch a problem early. A comprehensive dilated eye exam is the best way to spot eye problems early, even before you notice any changes in your vision!
Your friends are great, but they’re not a substitute for a trained eye care professional and the right tools. A comprehensive dilated eye exam is the best way to spot eye problems early, even before you notice any changes in your vision!
This is the best way to spot eye problems early, even before you notice any changes in your vision! During this exam, your eye doctor can check for diseases like glaucoma or macular degeneration.
Hope is nice, but it won’t help your eye health! Your best bet is a comprehensive dilated eye exam. It can spot eye problems early, even before you notice any changes in your vision!

Which of the following is a common symptom of vision problems?

That’s actually a good sign! If you can see clearly both up close and far away, it usually means your vision is in great shape. Headaches, tired eyes, or eye strain (especially after reading, screen time, or driving) can be signs you need an eye exam.
Yes! Headaches, tired eyes, or eye strain (especially after reading, screen time, or driving) can be signs you need an eye exam.
Sunglasses are a great choice for protecting your eyes from UV rays, but loving how you look in them isn’t a sign of vision problems (even if they are fabulous). Headaches, tired eyes, or eye strain (especially after reading, screen time, or driving) can be signs you need an eye exam.
Excellent vision at night is great, not a cause for concern. But headaches, tired eyes, or eye strain (especially after reading, screen time, or driving) can be signs you need an eye exam.

Which group is most at risk for developing glaucoma?

Using your phone a lot might make your eyes feel tired, but it doesn’t raise your risk of glaucoma. People over 60 are at higher risk for glaucoma, especially if they have a family history of the disease.
While caffeine can affect eye pressure in some people, drinking coffee doesn’t make you high-risk for glaucoma. People over 60 are at higher risk for glaucoma, especially if they have a family history of the disease.
Yes! People over 60 are at higher risk for glaucoma, especially if they have a family history of the disease. That’s why regular eye exams are important as we age.
Staying up late might make you tired, but it’s not a known risk factor for glaucoma. People over 60 are at higher risk for glaucoma, especially if they have a family history of the disease.

What can help protect your eyes when you’re outside?

Music makes everything better, but sadly, it doesn’t protect your eyes from the sun. Sunglasses that block 100% of UVA and UVB rays help protect your eyes from sun damage, which can lead to cataracts and other eye problems.
Sunscreen is great for protecting your skin, but it won’t shield your eyes. For that, you need proper eye protection such as sunglasses that block 100% of UVA and UVB rays.
You got it! Sunglasses that block 100% of UVA and UVB rays help protect your eyes from sun damage, which can lead to cataracts and other eye problems.
Fun and flirty, sure! However, winking won’t do anything to protect your eyes from the sun’s harmful rays. Sunglasses that block 100% of UVA and UVB rays are the way to go since they help protect your eyes from sun damage, which can lead to cataracts and other eye problems.

Which of the following is NOT a common cause of vision loss?

Diabetes can lead to serious vision problems like diabetic retinopathy, especially if blood sugar isn’t well controlled.
Cataracts are very common and can cause cloudy vision. Fortunately, they can often be treated with surgery.
Good news, watching TV won’t ruin your eyes! It might cause temporary eye strain, but it’s not a cause of permanent vision loss.
AMD is a leading cause of vision loss in older adults. It affects the central part of your vision and can make daily tasks harder.

  What part of the eye helps focus light so you can see clearly?

Your eyelids protect your eyes and help keep them moist, but they don’t play a role in focusing light. The cornea is the clear, front part of your eye. It is the part of the eye that bends (or refracts) light to help focus it, so you can see things clearly.
The retina is like film in a camera, it receives the light and sends signals to your brain. But it doesn’t focus the light. The cornea is the clear, front part of your eye. It bends (or refracts) light to help focus it, so you can see things clearly.
Yes! The cornea is the clear, front part of your eye. It bends (or refracts) light to help focus it, so you can see things clearly.
Eyelashes are great for catching dust and debris, but they don’t help with focusing light or improving your vision. That job is left to the cornea, the clear, front part of your eye. It bends (or refracts) light to help focus it, so you can see things clearly.

Last updated: April 30, 2025