This is a sequence of animations broken into five parts on the structure of the eye.

1. Part 1 of 5: An image of the anterior view and an image of the lateral view of the human eye is shown. The retina is labeled.
2. The on-screen text says "Let’s open up a human eye to take a look at its structure. Each eye is a living optical instrument that creates an image of the visual world on the light-sensitive retina that lines its inside back surface."
3. Part 2 of 5: An image of the lateral view of the human eye is shown. An animation depicting light entering the eye and falling on the retina is show. The cornea and the lens are labeled.
4. The on-screen text says "Light enters the eye through a transparent window at the front called the cornea. Light passes through the cornea and the crystalline lens located behind it, forming an upside-down image of objects on the retina. It might seem strange that the image is upside down, but it doesn't matter as the brain automatically compensates for it."
5. Part 3 of 5: An image of the lateral view of the human eye is shown. An animation shows you how the lens adjusts to near and far objects
6. The on-screen text says "The lens focuses the light rays falling on the retina. When you focus on a close object, the lens of your eye gets fatter and rounder to give you a clear image. When you focus on a distant objects, the lens flattens out to give you a better image."
7. Part 4 of 5: An image of the anterior view and an image of the lateral view of the human eye is shown. The pupil and the iris are labeled. An animation shows you how the pupil adjusts to bright and dim light.
8. The on-screen text says "The pupil is the opening in the center of the iris that helps regulate the amount of light passing into the rear chamber of the eye. In bright light, the pupils constrict as less light is needed to see a sharp image. In dim light, the pupils dilate to allow more light to fall on the retina so that more remains visible."
9. Part 5 of 5: An image of the anterior view and an image of the lateral view of the human eye is shown. This final screen reviews all structures covered in this module.
10. The on-screen text says "To review the anatomy covered in this module, select the different structures above. The pupil is the opening in the center of the iris that helps regulate the amount of light passing into the rear chamber of the eye. The iris is the colored ring of muscle surrounding the pupil. The retina is the light-sensitive neural tissue lining the inside back surface of the eye. The lens is a transparent structure that focuses the light rays falling on the retina. The cornea is the transparent window at the front of the eye that light passes through before reaching the lens."
11. End of animated sequence.