Diagram showing light rays passing through a converging lens to form an inverted image.

Draw a converging lens (representing the eye's lens) with an object (e.g., an arrow) placed some distance away. Draw two rays from the top of the object: one parallel to the principal axis, refracting through the focal point on the other side of the lens; and one passing through the center of the lens, unrefracted. Do the same for the bottom of the object. Where these rays intersect on the other side of the lens represents the image. The image will be inverted and smaller than the object.) See more