For information contact: Facts On File, Inc. An imprint of Infobase Publishing, Inc. 132 West 31st Street New York NY 10001 Library of Congress Cataloging-in-Publication Data Guiley, Rosemary. The encyclopedia of demons and demonology / Rosemary Ellen Guiley ; foreword by John Zafï¬s. p. cm.
Optometrists dilate a person's eyes so they can see the inside and back of the eyes. An eye exam should be performed annually. An ophthalmologist examines a patient. Normally, a person's pupils contract when light is bright. Routine eye exams are painless and can help detect vision or eye problems early.
Many people consider dilation a nuisance. 1  Nobody can honestly say they enjoy those pesky eyedrops, and the need for those funky sunglasses they may give you to wear out the door. Truth is, however, dilation of the eyes is the most important part of a comprehensive eye exam. By dilating the eyes, a doctor can get a much better view of the retina, optic nerve, and vessels in the back of the eye.