The Human Eye

Which part of the eye is clear and covers the front like a window

Which part of the eye controls the pupil?

Which part of the eye converts the light into a signal?

Which part of the eye allows the light to enter?

What is the name of the black hole in the center of the eye?

Which part of the eye enlarges or contracts depending on the amount of light that comes in?

Which part of the eye focuses the light that enters the eye?