Eye Anatomy
Eye Care
Vision Disorders
Animal Vision
Random Vision Facts
100

A word meaning "to widen" or "to swell".

Dilate

100

Wearing these on a sunny day can protect your eyes.

Sunglasses

100

A common type of treatment for astigmatism. 

Eyeglasses (or contact lenses)

100

This animal is nearsighted, meaning it can see things near them, but not far away.

Cat

100

The world's most common eye color.

Brown

200

The dark hole in the middle of the iris.

Pupil

200

Wearing these when playing sports, doing construction, or home repairs can protect your eyes.

Safety Glasses/Safety Goggles

200

The eyeball is too long, so images of distant objects are blurred.

Myopia (Nearsightedness)

200

This animal sleeps with its eyes open because they do not have eyelids to close their eyes.

Goldfish

200

Humans do this about 15-20 times per minute and up to 1,200 times per day!

Blink

300

It focuses light to the back of the eye by changing shape.

Lens
300

A dark leafy green that is good for your eyes.

Kale, Spinach, or Collard Greens

300

Another way of saying farsightedness.

Hyperopia

300

This animal cannot tell red and green apart.

Dog

300

This vision disorder is more common in males than in females. 

Color Blindness

400

These types of photoreceptors can change light into energy to be transmitted to the brain.

Rods and Cones

400

Taking a break every 20 minutes to look at something 20 feet away for 20 seconds.

20-20-20 rule

400

The surface of the cornea or lens has a weird shape that causes fuzzy vision.

Astigmatism

400

This animal can see a greater range of colors than humans.

Goldfish

400

This animal can be found in the desert and has three eyelids! This is to protect its eyes from sand blowing in the desert.

Camel

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