home *** CD-ROM | disk | FTP | other *** search
/ The Ultimate Human Body 2.0 / Ultimate Human Body 2.0, The (1996)(Dorling Kindersley).iso / smbm / seei / seei001p.png < prev    next >
Portable Network Graphic  |  1996-08-23  |  30KB  |  465x385  |  8-bit (201 colors)
Labels: airplane | book | door | fence | 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. Ringlike the ciliary muscles are relaxed ciliary muscles control the lens, or thinner allowing the the lens. lens the to less become the light thin. The making it for fatter for close objects are bent before they reach your retina thinner distant objects. Retina Ciliary muscles Image focuses on back Distant eye Rays of light object Image Lens Ciliary muscles relax, causing lens to get thinner DISTANT CLOSE