The place where all nerves from the retina join to form the optic nerve. Each eye has a _____ _____ where there are no light-sensitive cells

One kind of light-sensitive cell in the retina. Cones give you color vision in bright light.

A tough, clear covering over the iris and the pupil that helps protect the eye. Light bends as it passes through the _______ The cornea begins bending light to make an image; the lens finishes the job.

A muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. Human ________ come in many colors, including brown, blue, green, and gray.

A clear flexible structure that makes an image on the eye’s retina. The _____ is flexible so that it can change shape, focusing on objects that are close up and objects that are far away.

The fatty layer that surrounds each nerve fiber

The bundle of nerve fibers that carry information from the retina to the brain.

The _________ is the dark circle in the center of your iris. It’s a hole that lets light into the inner eye.

The layer of light-sensitive cells at the back of the eye. The _________ detects images focused by the cornea and the lens. The __________ is connected to the brain by the optic nerve.

One kind of light-sensitive cell in the retina. ________ respond in dim light.

The thick, tough, white outer covering of the eyeball.

The colorful, shiny material located behind the retina. Found in animals with good night vision, the ________ reflects light back through the retina.

The thick clear jelly that helps give the eyeball its shape