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Portable Network Graphic  |  1996-10-01  |  30KB  |  465x385  |  8-bit (201 colors)
Labels: airplane | book | door | windowpane
OCR: LENS AND FOCUSING HE can LENS is a on flexible structure DISTANT OBJECT that focus both near and distant objects. To do this, the To focus light from object lens changes its shape. Ring -like the ciliary muscles are relaxed ciliary muscles control the lens, or thinner allowing the the lens. lens the to less become the light thin. ravs The making thinner it for fatter distant for close objects. objects are bent before they reach your retina. Retina Ciliary muscles Image focuses on back Distant of eye Rays of light object Image Lens Ciliary muscles relax, causing lens to get thinner DISTANT CLOSE