Eye

What is the clear, dome-shaped front surface of the eye that helps focus light?

Hint: It is the outermost layer that light passes through first.

What is the colored part of the eye called?

Hint: When someone says you have blue or brown eyes, they are describing this part.

What is the black opening in the center of the iris that lets light in?

Hint: It gets larger in dim light and smaller in bright light.

What structure behind the pupil changes shape to focus light on the retina?

Hint: It becomes thicker to see close objects and thinner to see far objects.

What is the light-sensitive layer at the back of the eye where images are formed?

Hint: It contains millions of special cells that detect light.

What nerve carries visual information from the retina to the brain?

Hint: It exits from the back of the eyeball.

What are the two types of light-detecting cells in the retina?

Hint: One type detects dim light and movement; the other detects color.

Which type of retinal cell is responsible for seeing color?

Hint: There are three types of these, each detecting red, green, or blue light.

Which type of retinal cell works best in dim or low light?

Hint: These cells help you see in a dark room but cannot detect color.

What is the white outer layer of the eyeball called?

Hint: We commonly refer to it as 'the white of the eye.'

What does the iris do when you walk into a bright room?

Hint: Too much light can damage the retina, so the eye has a way to reduce it.