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Encyclopedia of Health and Medicine

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iv The Eyes<br />

To your health!<br />

The information presented in The Facts On File <strong>Encyclopedia</strong> <strong>of</strong> <strong>Health</strong> <strong>and</strong> <strong>Medicine</strong> is provided for research<br />

purposes only <strong>and</strong> is not intended to replace consultation with or diagnosis <strong>and</strong> treatment by medical doctors<br />

or other qualified experts. Readers who may be experiencing a condition or disease described herein<br />

should seek medical attention <strong>and</strong> not rely on the information found here as medical advice.<br />

The Facts On File <strong>Encyclopedia</strong> <strong>of</strong> <strong>Health</strong> <strong>and</strong> <strong>Medicine</strong> in Four Volumes: Volume 4<br />

Copyright © 2007 by Amaranth Illuminare<br />

All rights reserved. No part <strong>of</strong> this book may be reproduced or utilized in any form or by any means,<br />

electronic or mechanical, including photocopying, recording, or by any information storage or retrieval<br />

systems, without permission in writing from the publisher. For information contact:<br />

Facts On File, Inc.<br />

An imprint <strong>of</strong> Infobase Publishing<br />

132 West 31st Street<br />

New York NY 10001<br />

Produced by<br />

Amaranth Illuminare<br />

PO Box 573<br />

Port Townsend WA 98368<br />

Library <strong>of</strong> Congress Cataloging-in-Publication Data<br />

The Facts on File encyclopedia <strong>of</strong> health <strong>and</strong> medicine / Amaranth Illuminare <strong>and</strong> Deborah S. Romaine.<br />

p. ; cm.<br />

“An Amaranth book.”<br />

Includes index.<br />

ISBN 0-8160-6063-0 (hc : alk. paper)<br />

1. <strong>Medicine</strong>—<strong>Encyclopedia</strong>s. 2. <strong>Health</strong>—<strong>Encyclopedia</strong>s.<br />

[DNLM: 1. <strong>Medicine</strong>—<strong>Encyclopedia</strong>s—English. 2. Physiological<br />

Processes—<strong>Encyclopedia</strong>s—English. WB 13 R842f 2006] I. Title:<br />

<strong>Encyclopedia</strong> <strong>of</strong> health <strong>and</strong> medicine. II. Romaine, Deborah S., 1956- III.<br />

Facts on File, Inc. IV. Title.<br />

R125.R68 2006<br />

610.3—dc22<br />

2005027679<br />

Facts On File books are available at special discounts when purchased in bulk quantities for businesses,<br />

associations, institutions, or sales promotions. Please call our Special Sales Department in New York<br />

at (212) 967-8800 or (800) 322-8755.<br />

You can find Facts On File on the World Wide Web at http://www.factsonfile.com<br />

Text design <strong>and</strong> typesetting by Rhea Braunstein, RB Design<br />

Cover design by Dorothy Preston<br />

Printed in the United States <strong>of</strong> America<br />

VB RB 10 9 8 7 6 5 4 3 2 1<br />

This book is printed on acid-free paper.

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