Cow's Eye Dissection

If you look at your eye in a mirror, you’ll see a colored circle with a black spot in the middle. The colored circle is the iris . The black spot in the middle of the iris is the pupil , a hole through the iris that lets light into the eye. In dim light, the pupil opens wide, letting lots of light in.

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The pupil is the dark circle in the center of your iris. It’s a hole that lets light into the inner eye. Your pupil is round. A cow’s pupil is oval.

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